The Elkay DRKAD222050R3 Top Mount Classroom Single Bowl Sink with a Lustrous Highlighted Satin finish, is constructed out of a high quality firm and strong type 304 nickel bearing stainless steel. It is reliable for heavy duty work and long-lasting performance. It has high tolerance against heat and has excellent forming and welding characteristics that can sustain any kinds of abuse. This Elkay DRKAD222050R3 Top Mount Classroom Sink is furnished with 3 faucet holes one slotted hole at the right bottom side of the sink that allows for vandal-resistant bubbler and three faucet holes in line with the drain hole. The drain hole is 3½ inches which is located center from left to right but is off center front to back. It has the thickness of #18 gauge that is consistently timeless and also equipped with sound guard to minimize noise. The overall dimension of the sink is 22 inches long, 19.5 inches wide and 5 inches deep. This Elkay DRKAD222050R3 Classroom Sink complies with ASME A112.19.3/ CSA B45.4 and are listed by IAPMO as meeting the applicable requirements of the Uniform Plumbing Code , International Plumbing Code , and National Plumbing Code of Canada. When it comes to durability, style, and fashion, this sink is number one.