Fabric sheet self-adhesive backing for making windtight joints between FLECK vents in DN 100/125 or DN 150 and underlays.

• The round collar can be easily fitted on the vent pipe or on the flexible universal hose, positioned on the roof and bonded on the underlay
• Due to the round collar shape, a horizontal sealing run is avoided, draining water is therefore not stopped by the joint
• Note: The bonding surface must be thoroughly cleaned before installation, detailed explanations are provided in the installation instructions