881 Large Single Sink Product Diagrams Top View Side Cross-Section Inside Sink Dimensions 881 (SEAMED UNDERMOUNT) Length x Width x Depth inches 27 1/8 17 8 1/2 (mm) 690 432 214 All drain holes are nominally 3 1/2" (90 mm) in diameter and accept all standard drain hardware, including waste disposal units. Metric conversions are approximate.