This 24 inch bowl still has a 9 inch deep bowl?ideal for a prep area. The heavy 14?gauge copper is hammered copper. This kitchen copper sink has a standard 3.5" diameter opening, which fits 3.5" disposer drain assemblies. This kitchen copper sink?will fit a 3.5" disposer drain assembly. This model has one single rectangular bowl with inside dimensions of 20" x 16" x 9". The copper sheet is 14 gauge (0.064" thickness). This hammered kitchen copper sink is a beautiful piece of art. From a copper sheet the wise artisan hands transform it into this unique piece. The hammer footprint is very visible, giving it its own character. The reddish/oxidized texture is characteristic of natural copper when it is cooled down from red-hot temperature using cold water, that specific characteristic is what makes it so beautiful. The border around the four sides of the sink is 2".