Home / Sink Source Products / Granítis Collection / Quadro Series, Single Bar Sink, Black Quadro-N-100S-Black Quadro Series, Single Bar Sink, Black Outside Dimension 17 3/4" x 17" x 8" Inside Bowl 15 5/16" x 14 9/16 x 8" Installation Undermount Drain Size 3 1/2" Finish Black Onyx Notes Bar Matching strainer baskets and disposal flanges available Available Colors Product Documents DXFFile Related Products Virtus Series, Single Bowl, MochaQuadro Series, Single Bar Sink, WhiteMadison Series, Equal Double Bowl, MochaMadison Series, 60/40, Concrete