果冻视频

eCaps_Icon

Round Combination Fire Smoke Dampers

UL 555 1陆 hour rating, UL 555S Classified

Round combination fire smoke dampers perform the function of both a fire damper and a smoke damper. These are UL 555 classified with a fire resistance of 1陆 hours and UL 555S with a leakage class of I or II.

FSDR-511

Galvanized steel construction having a UL 555S class I rating with pressure to 4 in. wg, velocity to 3000 fpm and temperature to 350°F.

VIEW FSDR-511
https://catalog-api.greenheck.com/api/product/en-us/588

SSFSDR-511

Has 304 stainless steel construction, UL 555S class I rating with pressure to 4 in. wg, velocity to 4000 fpm and temperature to 350°F.

VIEW SSFSDR-511
https://catalog-api.greenheck.com/api/product/en-us/595