VELUX BBX 0000 Vapour Barrier Size (w x h):UK04 (134 x 98 cm) The innovative VELUX twin combination

The innovative VELUX twin combination flashing allows for two VELUX windows to be installed side by side with either a 50mm gap

Base height: 275mm

Incorporating VELUX ThermoTechnology™ GGL windows use high performance materials in the construction

Size: MK04 - 78 x 98 cm

and open fireplaces (when installed in accordance with current Building Regulations and appliance manufacturer guidance)

VELUX BBX 0000 Vapour Barrier Size (w x h):UK04 (134 x 98 cm) The innovative VELUX twin combinationDescription: The VELUX Vapour Barrier BBX stops warm, moist air from your home from entering your roof construction. Its quick and easy to install in your window frame, and creates an airtight seal to protect your roof from condensation and potential damage. The edge of the BBX vapour barrier is specifically designed to fit tightly into the window frame rebate providing an air tight seal which will assist in meeting air pressure testing of the