The BFBL fire protection joint tape is used to seal off insulated air ducts in combination with AIR FIRE TECH INLAP fire dampers and AIR FIRE TECH fire protection closures and FSA.

In the event of a fire, the self-adhesive fire protection joint tape expands and closes the annular gap between the air duct and the separating component - heat transfer to the side facing away from the fire is restricted.