MFD 20/30 – UL555 motorized fire damper
MFD 20/30 – UL555 motorized fire damper
Fire Rating : 20 Series-11⁄2 hour ; 30 Series-3 hour.
Blade Type : 3V Single Skin; A : ParalleI Operation
Construction : Galvanized Steel (GI), Stainless Steel (SS)
UL-555 Test Ratings
Fire Rating : 1 1⁄2 hrs. / 3 hrs Max Velocity : 2000 fpm
Max Operating Pressure : 4 in. w.g (1000 pa)
