Louvers and Grilles Pottorff features a full range of louvers including drainable, wind-driven rain and combination blade designs. Our FEMA grilles are designed in accordance with FEMA guidelines for storm shelters and safe rooms.
XAV-545 – FEMA Grille
ECD-545 – Wind-Driven Rain
n Free Area: 51.2% n Classified as a UL
n Free Area: 46.3% n Free Area Velocity: 1,250 fpm n Pressure Loss: 0.24 in. wg. n AMCA Certified for Water Penetration, Air Performance and Wind Driven Rain
Windstorm Rated Assembly n Design Pressure: 300 psf n AMCA Certified for Water Penetration and Air Performance n Available with a non- flanged frame and continuous angles for installation
INDUSTRY LEADING FREE AREA
The ECD-545 offers excellent protection against wind-driven rain under the most severe conditions and is ideally suited for high-wind areas.
The XAV-545 is designed in accordance with ICC 500, FEMA P-361 and FEMA P-320 guidelines for storm shelters and safe rooms.
EXA-645 – Combination Blade
n Free Area: 50.4% n Leakage Class: 1A
n Free Area Velocity: 1,085 fpm n Pressure Loss: 0.11 in. wg. n AMCA Certified for Water Penetration, Air Performance and Air Leakage
The EXA-645 design features stationary drainable louver blades to protect against water penetration and an integral airfoil blade control damper to allow positive shut-off of air intake and exhaust openings.
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