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Pottorff > Louvers and Penthouses > Louvers and Penthouses > FEMA/ICC-500 Rated > XAV-545

Model XAV-545

Aluminum Grille
Inverted V-Blade

The XAV-545 aluminum grille is designed in accordance with ICC 500 (2020), FEMA P-361 (2015) and FEMA P-320 (2014) guidelines for storm shelters and safe rooms. It offers exceptional protection against wind pressures and debris impacts produced by tornadoes and hurricanes. The XAV-545 is a UL Classified Windstorm Rated Assembly with a design pressure of 300 psf and has been impact-tested using 15-lb 2 x 4 timbers launched at 100 mph.

XAV-545 Inverted V-Blade

Standard Construction

Material: 6005A-T6  extruded aluminum.

Frames: 5-1/2" deep x 0.25" thick (140 x 6).

Blades: 0.16" (4) inverted V.

Screen: 1/2" x 0.063" (12.7 x 1.6) expanded and flattened aluminum.

Mullion: Visible.

Single section: 5-1/2" (140) on jambs.
Multiple section:
Single section high 5-1/2" (140) on top and bottom.
Single section wide: 5-1/2" (140) on jambs.

Minimum Size: 12" x 12" (305 x 305)

Maximum Size:
Single Section:
 48" x 96" (1219 x 2438) 
Multiple Section: 
Unlimited width x single section high
Single section wide x unlimited height


Free Area: 8.2 ft2 (0.76 m2)


Performance @ Beginning Point of Water Penetration

Free Area Velocity: 680 fpm (3.45 m/s)

Air Volume Delivered: 5577 cfm (2.63 m3/s)

Pressure Loss: 0.17 in. wg. (41 Pa)


Design Pressure: 300 psf (14.4 kPa)

AMCA Certified for Water Penetration and Air Performance
Classified as a UL Windstorm Rated Assembly

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