Fixing and buying guide

Use this buying guide for VELUX Vapour Barrier 55x78cm BBX CK02 0000 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 Vapour Barrier Collar 550×780mm (CK02) for roof windows and Sun Tunnels. Ensures weather-tight installation and professional finish on compatible systems.