The Elkay DRKADQ222045L0 is a Top Mount Classroom Single Bowl Sink with the Quick Clip system for quick and convenient installation. This one bowl classroom sink features a Lustrous Highlighted Satin finish. It is constructed out of a high-quality, #18 gauge, type 304 nickel-bearing stainless steel ideal for heavy duty work and long-lasting performance. With a high tolerance against heat and excellent forming and welding characteristics, this sink is designed to sustain long term use. This Elkay DRKADQ222045L0 Top Mount Classroom Sink is furnished without holes.The 3.5-inch drain hole is located at the center. This high-quality classroom sink is equipped with a sound guard coating on the underside to help minimize noise. The bowl dimension is 16 Inches long, 13.5 inches wide, and a depth of 4.875 inches. The overall dimension of the sink is 22 inches long, 19.5 inches wide and 4.5 inches deep. This Elkay DRKADQ222045L0 Classroom Sink also complies with ASME AND IAPMO requirements.