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: VELUX Underfelt Collar 55x78cm with transverse drainage gutter. Designed for compatible roof windows and Sun Tunnels to ensure weather-tight, professional roof finish in new build and refurbishment.