Universal Back to Back Fixing Kits. SKU: FX-UF-FK-BB Pinit Quantity discounts available QuantityPrice Quantity -+ Add to Basket DescriptionThese fixing kits are used for the BLU Universal Fix Products, which are used when fixing 2 products on either side of the door.For a door thickness of up to 85mm.DocumentationTechnical DWG Drawing: DownloadTechnical PDF Drawing: DownloadFitting Guide: Download