VIC Curtain Fire Dampers are designed for use in all forced air commercial and industrial HVAC systems. Their applications vary from a partial or auxiliary nature to being the major or principal restore the fire resistance of a wall or floor, in which a hole has been formed to permit the passage of air, either ducted or not, to enable an air distribution system to function in a building. Compliance with UL-555 Classified 1-1/2 and3 Hours, IBC/ICC & NFPA -90A,80. Here listed below but not limited currently models: