How and where to use guide

VELUX Underfelt Collar 66x118cm BFX FK06 1000 should be used according to the intended application and site requirements. How and where to use: - Prepare surfaces and adjoining assemblies before installation. - Install to manufacturer guidance and relevant site standards. - Check fit, alignment, and finish quality before handover. - Additional context: The VELUX BFX FK06 1000 Underfelt Collar is a 660x1180mm flashing and transverse drainage gutter designed for use with compatible VELUX roof window and Sun Tunnel systems. It provides weather-tight sealing between the window frame and roof structure, with i...