VELUX BDX 2011E Insulation Collar for Coupled Installations
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The VELUX BDX 2011E Insulation Collar is for applications where the EKL / EKW and EKP coupled flashing kits with a 100mm gap are being installed. These collars make insulating and installing the roof windows a simple process and work towards reducing heat loss and eliminating cold bridges.
With the BFX Underfelt Collar also included the risk of condensation is also minimised.