D-bowl and three quarter undermount sink 3 1/2" rear center drain sound deadening pads three quarter bowl is on the right only with 3 1/2" center drain D-bowl dimensions: 21 1/4" x 18 3/4" x 8" Half bowl dimensions: 11 3/4" x 13 3/8" x 5 7/8" Outside dimensions: 37" x 22" x 8"