FEMA 361 Tornado Louvers - AFL-601

Model AFL-601 is an all-in-one wind-driven rain FEMA dual-module with horizontal front blades and vertical rear blades designed to protect air intake and exhaust ventilation openings on FEMA 361/320 storm shelters or safe rooms. It is tested in accordance with the stringent ICC 500 (2020 & 2023) test standard and is UL Listed. AFL-601 is AMCA 540 Listed for Wind-Borne Debris Impact and AMCA 550 Listed for High-Velocity Wind-Driven Rain. 6-inch depth 43.6% free area (4 ft. x 4 ft.) 1250 fpm free area velocity at the beginning point of water penetration Class A Wind-Driven Rain Performance Patent pending