WindowBlock ASLAN DFP 25 Double-sided white blockout film for digital printingDouble sided white blockout film for digital printing This high opacity self adhesive blockout film is white on both sides, making it ideal for double sided advertising on glass. The high opacity of the blockout layer prevents the print motif from showing through. In combination with a reversely printed clear digital printing film, both sides of a glass surface can be used without actually applying any film on the outside. This gives you double sided