Block Door Duracote 2100 x 920 x 40mmBlock Door Duracote 2100 x 920 x 40mm Block Doors, sometimes called Blockboard, and building industry as Solid Timber Pine Core (STPC) doors are solid timber doors that can be used internally or externally with a pre primed temperate hardboard skin. Features Easily customisable (able to be cut to any size) Solid timber pine core construction DuraXP (formally known as Duracote) skin providing a pre primed surface for finishing Excellent insulation and