Blancospex 440320 Single Bowl Undermount Sinks, Stainless steel kitchen sinks, Blancospex 440320 is part of the Premium Collection. Single bowl Undermount stainless steel Sink. 20 gauge. The usable sink space is 21" wide x 16" from front to back. The total size of the sink is 23" wide x 18" from front to back. The bowl is 7" deep. The required interior cabinet space is 24". Value engineered designs, including a broad selection of styles, configurations and special features. Featuring a Satin Finish.