Fixing and buying guide

Use this buying guide for VELUX Underfelt Collar 55x78cm BFX CK02 1000 before ordering. What to check before buying: - Confirm dimensions and compatibility with adjoining components. - Verify fixings, adhesives, and accessories required for installation. - Match quantity to project area and allow for cuts/wastage. - Product overview: The Velux BFX CK02 1000 Underfelt Collar + Transverse Drainage Gutter - 550x780mm is designed to work with compatible roof window or Sun Tunnel systems, supporting a neat, professional installation and reliable long t...