The Elkay DRKADQ222040R4 Top Mount Classroom Single Bowl Sink with Quick Clip with a Lustrous Highlighted Satin finish is a product that is patented by Elkay. It is constructed out of high-quality 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 kind of abuse. This Elkay DRKADQ222040R4 Top Mount Classroom Sink is furnished with 4 faucet holes, one slotted hole at the right bottom side of the sink that allows for vandal-resistant bubbler and four faucet hole in line with the drain hole. The 3½-inch drain hole is located at the center of the sink. It has the thickness of #18 gauge that is consistently timeless and also equipped with a sound guard to minimize noise. The bowl dimension is 16 Inches long, 13.5 inches wide, and a height of 3-7/8. The overall dimension of the sink is 22 inches long, 20 inches wide and 4 inches deep. This Elkay DRKADQ222040R4 Classroom Sink complies with ASME A112.19.3/ CSA B45.4 and is 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.