• No regular control test according to ÖNORM H 6027
• Pipe connection pieces for further air ducts
• Low pressure loss
• System-tested with AIR FIRE TECH cold smoke barriers LRK-MH
• Simple installation and retrofitting

The BST-EST slide-in fire damper with integrated pipe connection piece is used to seal off air ducts made of spiral ducts.

It consists of an aluminum housing with internal and external insulation layer formers.

In the event of a fire, the intumescent layer expands - the pipe cross-section is sealed and heat transfer to the side facing away from the fire is restricted.

Permitted separating components

Distance regulation