G- Galvanized Construction: SS*- Stainless steel construction: GS*- Combination of Galvanized & Stainless steel construction.
AEROSYS also manufactures multi-blade dynamic-rated-fire damper with 3V style blades for use in walls, floors, and partitions with fire-resistance ratings of 1½ hours and 3 hours. Dynamic-rated-fire dampers are used with HVAC systems that remain operational during a fire emergency. The product is tested and UL 555 classified with a fire resistance rating of 1½ hours or 3 hours for use in static as well as dynamic systems
MOTORIZED FIRE DAMPER
