BLANCO BLANCODIAMOND Bar Sink, Silgranit Prep sink 80% solid granite. Heat resistant up to 536 degree F. Homogenous and nonporous surface, color all the way through. Resistant to scratches, stains and all household acids and alkali solutions. Dropin cutout template supplied, size 193/4" x 141/4" and cutout corner radius 5/8". (Undermount template provided).