Greenheck introduced the Model AFL-501, a 5.5-in deep, severe duty aluminum louver that protects exterior wall penetrations on FEMA 361 or 320 compliant storm shelters or safe rooms. According to the company, the Model AFL-501’s design incorporates inverted V-style blades that lend high free area, excellent resistance to water penetration and very low airflow resistance, while providing maximum protection against extremely high wind loads and wind-borne debris.  Licensed to bear the AMCA seal for Water Penetration and Air Performance, Model AFL-501’s UL Classified wind-storm rated assembly can withstand wind loads up to +/- 300 PSF and passes the ICC 500 debris impact standard of a 15 lb. 2x4 traveling at 100 MPH.   
 
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