Fire damper supplier in UAE on X: "UL classified (ul-555/ul-555s) products 1. Motorized fire & smoke damper 2. Fire damper 3. Motorized fire damper 4. Motorized smoke damper #dubai # #firesafety #sharjah #
File:Ul555 fire damper test.png - Wikimedia Commons
K 75 B-H (3 Hours) + Sleeve | PDF | Duct (Flow) | Screw
DFD60-3 : UL 555 3 hr. Dynamic, Airfoil Blade, 4,000 fpm and 8" w.g. max, Optional Sleeve
EFS Fire and Smoke Dampers UL555 and UL555S - YouTube