The VELUX BDX insulation collar is an insulation frame for flush recessed and standard installs with flexible foam between the roof construction and the window frame. It provides a tight and secure fit to the roof construction.
The VELUX BDX Insulation collar insulates around a single roof window frame, reducing heat loss and eliminating thermal bridges. This product turns the insulation and the installation of the roof window in a simple process, ensuring quick assembly.
