Velux Insulation Collar BDX 2000 MO4 78 x 98cm
Product Code: 839
Price: £27.30 (£32.76 Inc VAT )
| Velux Insulation Collar BDX 2000 MO4 78 x98cm|
For the ultimate in insulation, we recommend our BDX Insulation Collar.
It reduces heat loss by eliminating thermal bridges between the window and your roof structure. Also comes with BFX Underfelt Collar
Underfelt material: frothed polyethylene, heat transfer group 040.
Collar material: polypropylene.
Material thickness: 0.5 mm.
SD value (water vapour diffusion resistance): 0.03 m