Louver Properties
Louver Purpose
Material Type
Blade Movement
Frame Depth
Drainability
Blade Angle
Louver Stats
Percentage Free Area
Pressure Drop (in. w.g. @ 1000 fpm)
Beginning of Water Penetration (fpm)
Louver Certifications
AMCA Ratings
Miami-Dade Rating
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\06 [AC45C]\thumb_LD - AC45C.png)
Model: AC45C
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .14 in. w.g. @ 994 fpm
Water Penetration: 994 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\07 [AC45CM]\thumb_LD - AC45CM.png)
Model: AC45CM
Free Area: N/A
Minimum Panel Size: 12" x 16"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\13 [Acoustical Louvers]\00 [Aluminum & Galvanized Steel]\05 [ACL47(L)]\thumb_LD - ACL47.png)
Model: ACL47
Free Area: 28.18%
Minimum Panel Size: 12" x 18"
Maximum Panel Size: 60" x 96"
Pressure Drop: .18 in. w.g. @ 1000 fpm
Water Penetration: 787 fpm
![](/tools\uss\Louvers & Dampers\13 [Acoustical Louvers]\00 [Aluminum & Galvanized Steel]\05 [ACL47(L)]\thumb_LD - ACL47.png)
Model: ACL47L
Free Area: 28.18%
Minimum Panel Size: 12" x 18"
Maximum Panel Size: 60" x 96"
Pressure Drop: .18 in. w.g. @ 1000 fpm
Water Penetration: 787 fpm
![](/tools\uss\Louvers & Dampers\13 [Acoustical Louvers]\00 [Aluminum & Galvanized Steel]\04 [ACL48212]\thumb_LD - ACL48212.png)
Model: ACL482-12
Free Area: 25.00%
Minimum Panel Size: 12" x 24"
Maximum Panel Size: 60" x 96"
Pressure Drop: .10 in. w.g. @ 1000 fpm
Water Penetration: 1057 fpm
![](/tools\uss\Louvers & Dampers\13 [Acoustical Louvers]\00 [Aluminum & Galvanized Steel]\03 [ACL482126]\thumb_LD - ACL482126.png)
Model: ACL482126
Free Area: 24.88%
Minimum Panel Size: 12" x 24"
Maximum Panel Size: 60" x 96"
Pressure Drop: .07 in. w.g. @ 1000 fpm
Water Penetration: 1084 fpm
![](/tools\uss\Louvers & Dampers\13 [Acoustical Louvers]\00 [Aluminum & Galvanized Steel]\01 [ACL48266]\thumb_LD - ACL48266.png)
Model: ACL482-66
Free Area: 26.00%
Minimum Panel Size: 12" x 24"
Maximum Panel Size: 60" x 96"
Pressure Drop: .10 in. w.g. @ 1000 fpm
Water Penetration: 858 fpm
![](/tools\uss\Louvers & Dampers\13 [Acoustical Louvers]\00 [Aluminum & Galvanized Steel]\02 [ACL48288]\thumb_LD - ACL48288.png)
Model: ACL482-88
Free Area: 25.00%
Minimum Panel Size: 12" x 24"
Maximum Panel Size: 60" x 96"
Pressure Drop: .085 in. w.g. @ 1000 fpm
Water Penetration: 990 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\04 [Insulated Blade]\02 [ACL73A]\thumb_LD - ACL73A.png)
Model: ACL73A
Free Area: 45.40%
Minimum Panel Size: 12" x 14"
Maximum Panel Size: 48" x 96"
Pressure Drop: .17 in. w.g. @ 1000 fpm
Water Penetration: 841 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\03 [FEMA]\01 [ALLF5]\thumb_LD - ALLF5.png)
Model: ALLF5
Free Area: 49.30%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 90" x 90"
Pressure Drop: .35 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\15 [Brick Vents & Accessories]\01 [Brick Vents]\01 [BV]\thumb_LD - BV.png)
Model: BV
Free Area: N/A
Minimum Panel Size: Variable
Maximum Panel Size: Variable
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\15 [Brick Vents & Accessories]\01 [Brick Vents]\02 [BV-F]\thumb_LD - BV-F.png)
Model: BV-F
Free Area: N/A
Minimum Panel Size: Variable
Maximum Panel Size: Variable
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\04 [Insulated Blade]\01 [D7004]\thumb_LD - D7004.png)
Model: D7004
Free Area: 38.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\04 [Thin Line]\01 [DATL30]\thumb_LD - DATL30.png)
Temp Unavailable
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Model: DATL30
Free Area: 72.60%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 48"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\04 [Thin Line]\02 [DATL42]\thumb_LD - DATL42.png)
Model: DATL42
Free Area: 61.11%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 48"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\08 [DC65D]\thumb_LD - DC65D.png)
Model: DC65D
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .11 in. w.g. @ 1029 fpm
Water Penetration: 1029 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\10 [DC65DM]\thumb_LD - DC65DM.png)
Model: DC65DM
Free Area: 52.00%
Minimum Panel Size: 12" x 19"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: 1029 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\11 [DC68C]\thumb_LD - DC68C.png)
Model: DC68C
Free Area: 52.00%
Minimum Panel Size: 12" x 16"
Maximum Panel Size: 48" x 96"
Pressure Drop: .145 in. w.g. @ 981 fpm
Water Penetration: 981 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\13 [DC68CM]\thumb_LD - DC68CM.png)
Model: DC68CM
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\01 [Grille Screen]\01 [EG1]\thumb_LD - EG1.png)
Model: EG1
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\01 [Grille Screen]\02 [EG2]\thumb_LD - EG2.png)
Model: EG2
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\01 [Grille Screen]\03 [EG2C]\thumb_LD - EG2C.png)
Model: EG2C
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\01 [Grille Screen]\04 [EG3C]\thumb_LD - EG3C.png)
Model: EG3C
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\06 [EL27]\thumb_LD - EL27.png)
Temp Unavailable
Click Here to Contact the Factory
Model: EL27
Free Area: 47.90%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .08 in. w.g. @ 780 fpm
Water Penetration: 763 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\04 [EL47]\thumb_LD - EL47.png)
Model: EL47
Free Area: 57.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .14 in. w.g. @ 920 fpm
Water Penetration: 886 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\01 [EL47IE]\thumb_LD - EL47IE.png)
Model: EL471E
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\02 [EL47A]\thumb_LD - EL47A.png)
Model: EL47A
Free Area: 43.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .16 in w.g. @ 1000 fpm
Water Penetration: 1044 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\04 [EL48]\thumb_LD - EL48.png)
Model: EL48
Free Area: 56.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .14 in. w.g. @ 950 fpm
Water Penetration: 932 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\05 [EL49]\thumb_LD - EL49.png)
Model: EL49
Free Area: 57.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .11 in. w.g. @ 900 fpm
Water Penetration: 876 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\03 [EL62A]\thumb_LD - EL62A.png)
Temp Unavailable
Click Here to Contact the Factory
Model: EL62A
Free Area: 57.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .15 in. w.g. @ 1000 fpm
Water Penetration: 841 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\04 [EL62AM]\thumb_LD - EL62AM.png)
Temp Unavailable
Click Here to Contact the Factory
Model: EL62AM
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\10 [EL63]\thumb_LD - EL63.png)
Model: EL63
Free Area: 55.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .16 in. w.g. @ 1100 fpm
Water Penetration: 1093 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\05 [Sight Proof]\05 [EL79]\thumb_LD - EL79.png)
Model: EL79
Free Area: 27.70%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .40 in. w.g. @ 1000 fpm
Water Penetration: 924 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\05 [Sight Proof]\03 [EL81]\thumb_LD - EL81.png)
Model: EL81
Free Area: 37.40%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .36 in. w.g. @ 1000 fpm
Water Penetration: 920 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\05 [Sight Proof]\04 [EL82]\thumb_LD - EL82.png)
Model: EL82
Free Area: 37.40%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 60"
Pressure Drop: .35 in. w.g. @ 1000 fpm
Water Penetration: 984 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\05 [Sight Proof]\01 [EL85]\thumb_LD - EL85.png)
Model: EL85
Free Area: 38.90%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .50 in. w.g. @ 1000 fpm
Water Penetration: 789 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\05 [Sight Proof]\02 [EL86]\thumb_LD - EL86.png)
Model: EL86
Free Area: 38.90%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 60"
Pressure Drop: .50 in. w.g. @ 1000 fpm
Water Penetration: 848 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\04 [EL88A]\thumb_LD - EL88A.png)
Model: EL88A
Free Area: 67.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .14 in w.g. @ 1000 fpm
Water Penetration: 681 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\03 [EL88AM]\thumb_LD - EL88AM.png)
Model: EL88AM
Free Area: N/A
Minimum Panel Size: 12" x 19"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\02 [Mitered Corners]\01 [EP48M]\thumb_LD - EP48M.png)
Model: EP48M
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: 84" x 84"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\01 [Post Corners]\01 [EP48P]\thumb_LD - EP48P.png)
Model: EP48P
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: 84" x 84"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\02 [Mitered Corners]\02 [EP63M]\thumb_LD - EP63M.png)
Model: EP63M
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: 84" x 84"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\01 [Post Corners]\02 [EP63P]\thumb_LD - EP63P.png)
Model: EP63P
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: 84" x 84"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\02 [Equipment Screen]\01 [ESI2]\thumb_LD - ESI2.png)
Model: ESI2
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\02 [Equipment Screen]\02 [ESI4]\thumb_LD - ESI4.png)
Model: ESI4
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\02 [Equipment Screen]\03 [ESI6]\thumb_LD - ESI6.png)
Model: ESI6
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\02 [Equipment Screen]\05 [ESV]\thumb_LD - ESV.png)
Model: ESV
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\10 [Equipment & Vision Screens]\02 [Equipment Screen]\04 [ESY]\thumb_LD - ESY.png)
Model: ESY
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\03 [FEMA]\02 [FSLF8]\thumb_LD - FSLF8.png)
Model: FSLF8
Free Area: 53.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 76" x 120"
Pressure Drop: .30 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\01 [IL20]\thumb_LD - IL20.png)
Model: IL20
Free Area: 43.30%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .38 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\07 [IL21]\thumb_LD - IL21.png)
Model: IL21
Free Area: 51.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 120"
Pressure Drop: .19 in. w.g. @ 1000 fpm
Water Penetration: 1021 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\01 [IL21A]\thumb_LD - IL21A.png)
Model: IL21A
Free Area: 44.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .14 in. w.g. @ 1000 fpm
Water Penetration: 974 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\02 [IL21AM]\thumb_LD - IL21AM.png)
Model: IL21AM
Free Area: N/A
Minimum Panel Size: 12" x 19"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\06 [IL23]\thumb_LD - IL23.png)
Model: IL23
Free Area: 57.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .12 in. w.g. @ 905 fpm
Water Penetration: 868 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\05 [IL24]\thumb_LD - IL24.png)
Model: IL24
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .17 in. w.g. @ 1100 fpm
Water Penetration: 942 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\07 [IL31]\thumb_LD - IL31.png)
Model: IL31
Free Area: 56.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .12 in. w.g. @ 1000 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\05 [IL31A]\thumb_LD - IL31A.png)
Model: IL31A
Free Area: 54.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .145 in w.g. @ 1000 fpm
Water Penetration: 880 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\02 [Airfoil Blade]\01 [IL31AF]\thumb_LD - IL31AF.png)
Model: IL31AF
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .14 in. w.g. @ 1026 fpm
Water Penetration: 1029 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\02 [Airfoil Blade]\02 [IL31AFM]\thumb_LD - IL31AFM.png)
Model: IL31AFM
Free Area: 52.00%
Minimum Panel Size: 12" x 19"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: 1029 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\06 [IL31AM]\thumb_LD - IL31AM.png)
Model: IL31AM
Free Area: N/A
Minimum Panel Size: 12" x 19"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\08 [IL34]\thumb_LD - IL34.png)
Model: IL34
Free Area: 56.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .12 in. w.g. @ 1000 fpm
Water Penetration: 993 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\02 [IL38]\thumb_LD - IL38.png)
Model: IL38
Free Area: 44.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 60"
Pressure Drop: .083 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\01 [Hurricane]\03 [IL50]\thumb_LD - IL50.png)
Model: IL50
Free Area: 44.30%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .31 in. w.g. @ 1250 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\02 [Chevron Blade]\01 [IL52]\thumb_LD - IL52.png)
Model: IL52
Free Area: 48.30%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 120"
Pressure Drop: .208 in. w.g. @ 1000 fpm
Water Penetration: 1141 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\03 [IL53]\thumb_LD - IL53.png)
Model: IL53
Free Area: 47.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .260 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\04 [IL54]\thumb_LD - IL54.png)
Model: IL54
Free Area: 47.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 60"
Pressure Drop: .260 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\06 [IL55]\thumb_LD - IL55.png)
Model: IL55
Free Area: 46.10%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .22 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\13 [IL56]\thumb_LD - IL56.png)
Model: IL56
Free Area: 43.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .47 in. w.g. @ 1000 fpm
Water Penetration: 821 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\03 [IL58]\thumb_LD - IL58.png)
Model: IL58
Free Area: 45.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .12 in. w.g. @ 1000 fpm
Water Penetration: 901 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\05 [IL59]\thumb_LD - IL59.png)
Model: IL59
Free Area: 44.30%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 120"
Pressure Drop: .32 in. w.g. @ 1000 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\09 [IL64]\thumb_LD - IL64.png)
Model: IL64
Free Area: 53.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 120"
Pressure Drop: .103 in. w.g. @ 1000 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\07 [Continuous Line]\10 [IL65]\thumb_LD - IL65.png)
Temp Unavailable
Click Here to Contact the Factory
Model: IL65
Free Area: 53.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 120"
Pressure Drop: .10 in. w.g. @ 800 fpm
Water Penetration: 1100 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\01 [Hurricane]\09 [IL66]\thumb_LD - IL66.png)
Model: IL66
Free Area: 43.40%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .17 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\07 [IL67]\thumb_LD - IL67.png)
Model: IL67
Free Area: 44.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .160 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\01 [Hurricane]\06 [IL68]\thumb_LD - IL68.png)
Model: IL68
Free Area: 49.10%
Minimum Panel Size: 18" x 18"
Maximum Panel Size: 96" x 96"
Pressure Drop: .164 in. w.g. @ 1250 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\01 [Hurricane]\04 [IL69]\thumb_LD - IL69.png)
Model: IL69
Free Area: 58.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 96"
Pressure Drop: .14 in. w.g. @ 1000 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\12 [IL72]\thumb_LD - IL72.png)
Model: IL72
Free Area: 42.40%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .022 in. w.g. @400 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\01 [Hurricane]\08 [IL73]\thumb_LD - IL73.png)
Model: IL73
Free Area: 42.40%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .022 in. w.g. @398 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\10 [IL75]\thumb_LD - IL75.png)
Temp Unavailable
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Model: IL75
Free Area: 45.10%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 120"
Pressure Drop: .34 in. w.g. @ 1000 fpm
Water Penetration: 1187 fpm
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\04 [Sand]\01 [IL80]\thumb_LD - IL80.png)
Temp Unavailable
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Model: IL80
Free Area: 27.56%
Minimum Panel Size: 12" x 18"
Maximum Panel Size: 48" x 96"
Pressure Drop: .65 in. w.g. @ 1250 fpm
Water Penetration: Sand Louver
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\11 [IL85]\thumb_LD - IL85.png)
Temp Unavailable
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Model: IL85
Free Area: 56.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .48 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\01 [Post Corners]\03 [IP23P]\thumb_LD - IP23P.png)
Model: IP23P
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: 84" x 84"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\01 [Post Corners]\04 [IP31P]\thumb_LD - IP31P.png)
Model: IP31P
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: 84" x 84"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\01 [L11F]\thumb_LD - L11F.png)
Model: L11F
Free Area: N/A
Minimum Panel Size: 6" x 6"
Maximum Panel Size: 24" x 24"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\04 [Sand]\02 [L461]\thumb_LD - L461.png)
Model: L461
Free Area: 34.00%
Minimum Panel Size: 24" x 24"
Maximum Panel Size: 60" x 96"
Pressure Drop: .70 in. w.g. @ 1000 fpm
Water Penetration: Sand Louver
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\07 [L677E]\thumb_LD - L677E.png)
Model: L677E
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\02 [Airfoil Blade]\03 [L680DAFC]\thumb_LD - L680DAFC.png)
Model: L680DAFC
Free Area: 52.00%
Minimum Panel Size: 12" x 19"
Maximum Panel Size: 96" x 72"
Pressure Drop: N/A
Water Penetration: 1029 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\09 [L680DC]\thumb_LD - L680DC.png)
Model: L680DC
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 96" x 72"
Pressure Drop: N/A
Water Penetration: 1029 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\12 [L681C]\thumb_LD - L681C.png)
Model: L681C
Free Area: N/A
Minimum Panel Size: 12" x 16"
Maximum Panel Size: 96" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\02 [LA4DHP]\thumb_LD - LA4DHP.png)
Model: LA4DHP
Free Area: 61.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .13 in. w.g. @ 1000 fpm
Water Penetration: 909 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\03 [LA4SHP]\thumb_LD - LA4SHP.png)
Model: LA4SHP
Free Area: 60.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .13 in. w.g. @ 1000 fpm
Water Penetration: 990 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\08 [LA6DHP]\thumb_LD - LA6DHP.png)
Model: LA6DHP
Free Area: 63.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .13 in. w.g. @ 1000 fpm
Water Penetration: 1103 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\01 [Straight Blade]\09 [LA6SHP]\thumb_LD - LA6SHP.png)
Model: LA6SHP
Free Area: 61.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .12 in. w.g. @ 1000 fpm
Water Penetration: 964 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\06 [Combination]\01 [LDI50]\thumb_LD - L-DI-50.png)
Model: L-DI-50
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\09 [Severe Weather Louvers]\02 [Wind Driven Rain]\08 [LEA662HSL]\thumb_LD - LEA662HSL.png)
Model: LEA662HSL
Free Area: 51.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 120" x 120"
Pressure Drop: .10 in. w.g. @ 925 fpm
Water Penetration: ≥ 1250 fpm
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\01 [LFS150]\thumb_LD - LFS150.png)
Model: LFS150
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\02 [Chevron Blade]\02 [LFS609]\thumb_LD - LFS609.png)
Model: LFS609
Free Area: N/A
Minimum Panel Size: N/A
Maximum Panel Size: N/A
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\01 [Post Corners]\05 [LSEP45S]\thumb_LD - LSEP45S.png)
Model: LSEP45S
Free Area: 30.69%
Minimum Panel Size: 38" x 38" x 18"
Maximum Panel Size: 38" x 38" x 18"
Pressure Drop: .125 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\14 [Penthouses]\01 [Post Corners]\06 [LSVP45C]\thumb_LD - LSVP45C.png)
Model: LSVP45C
Free Area: 40.87%
Minimum Panel Size: 38" x 38" x 18"
Maximum Panel Size: 38" x 38" x 18"
Pressure Drop: .125 in. w.g. @ 1000 fpm
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\05 [SL21]\thumb_LD - SL21.png)
Model: SL21
Free Area: 50.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .14 in. w.g. @ 1000 fpm
Water Penetration: 987 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\16 [SL21A]\thumb_LD - SL21A.png)
Model: SL21A
Free Area: 44.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .16 in. w.g. @ 1050 fpm
Water Penetration: 1002 fpm
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\08 [SL31]\thumb_LD - SL31.png)
Model: SL31
Free Area: 55.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .13 in. w.g. @ 950 fpm
Water Penetration: 1096 fpm
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\07 [SL33]\thumb_LD - SL33.png)
Model: SL33
Free Area: 52.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .14 in. w.g. @ 950 fpm
Water Penetration: 952 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\14 [SL33A]\thumb_LD - SL33A.png)
Model: SL33A
Free Area: 53.13%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 48" x 96"
Pressure Drop: .18 in. w.g. @ 1200 fpm
Water Penetration: 859 fpm
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\03 [Baffle Blade]\01 [SL45]\thumb_LD - SL45.png)
Model: SL45
Free Area: 51.60%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .07 in. w.g. @ 650 fpm
Water Penetration: 643 fpm
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\01 [Straight Blade]\15 [SL47A]]\thumb_LD - SL47A.png)
Model: SL47A
Free Area: 48.68%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .10 in. w.g. @ 720 fpm
Water Penetration: 645 fpm
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\03 [SL48]\thumb_LD - SL48.png)
Model: SL48
Free Area: 51.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .08 in. w.g. @ 630 fpm
Water Penetration: 614 fpm
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\06 [SL49]\thumb_LD - SL49.png)
Model: SL49
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\02 [SL57]\thumb_LD - SL57.png)
Model: SL57
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\04 [SL63]\thumb_LD - SL63.png)
Model: SL63
Free Area: 46.30%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\03 [Baffle Blade]\02 [SL65]\thumb_LD - SL65.png)
Model: SL65
Free Area: 45.81%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\01 [Straight Blade]\09 [SL67]\thumb_LD - SL67.png)
Model: SL67
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\04 [Insulated Blade]\03 [SL69]\thumb_LD - SL69.png)
Model: SL69
Free Area: N/A
Minimum Panel Size: 10" x 8 1/2"
Maximum Panel Size: 48" x 72"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\12 [Adustable & Combination Louvers]\03 [Baffle Blade]\08 [SL73C]\thumb_LD - SL73C.png)
Model: SL73C
Free Area: N/A
Minimum Panel Size: 12" x 14"
Maximum Panel Size: 48" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\11 [Formed Steel Louvers]\02 [Chevron Blade]\01 [SL80]\thumb_LD - SL80.png)
Model: SL80
Free Area: N/A
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: N/A
Water Penetration: N/A
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\01 [TE15]\thumb_LD - TE15.png)
Model: TE15
Free Area: 46.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .034 in. w.g. @ 495 fpm
Water Penetration: 459 fpm
![](/tools\uss\Louvers & Dampers\08 [Aluminum Louvers]\03 [Baffle Blade]\02 [TE57]\thumb_LD - TE57.png)
Model: TE57
Free Area: 45.00%
Minimum Panel Size: 12" x 12"
Maximum Panel Size: 60" x 96"
Pressure Drop: .09 in. w.g. @ 750 fpm
Water Penetration: 748 fpm