VELUX BFX 1000 | Underfelt collar

The range of VELUX installation products make the professional installation of your roof windows quick, simple and safe. All original VELUX installation products are compatible to ensure that your roof window is weathertight and safe connected to the roof construction and has an excellent finish on the inside.

VELUX BFX - pleated underfelt collar forms a tight seal between roof window and your felt underlay.

•  Ensures a weather-tight seal between the roof window and the roof.
•  Can also be purchased separately from the Insulation Collar (BDX).
•  Pleated material ensures a flexible and tight seal to the underfelt of the roof, whatever its construction.
•  Made from diffusion open material to minimise risk of condensation.
•  Comes with transverse drainage gutter to lead water away from the head of the window if a tile or slate is broken above the window.
•  Welded corners ensure watertight and simple installation.

Permissible angle of the roof slope:
15º - 90º

Suitable for windows: GGL, GZL, GGU, GHL, GHU, GPL, GPU, GTL, GXL, GIL, GIV i GIU.