How To Open Your Damper Fire Damper Type B
STATIC Fire Damper - 3 HR UL Rated. Type A, B, C · ONE HOUR FIRE DAMPER QUOTES · Standard Frame Profile (4 1/4") · 22 ga Galvanized Steel construction · 1 piece The Nailor Model D0120DOW is a Type B “out-of-wall” curtain fire damper, engineered for situations where installation within the ...