How and where to use guide

VELUX Underfelt Collar 55x78cm BFX CK02 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 CK02 1000 Underfelt Collar is engineered to work with compatible VELUX roof window and Sun Tunnel systems. It provides a weather-tight seal and visually consistent roof finish, supporting both new build and refurbishment installations. The int...