ADA COMPLIANT: Product is ADA compliant when properly installed 22-GAUGE STAINLESS STEEL: Commercial grade 22-gauge thickness and 300 Series stainless steel for everyday use. DROP-IN INSTALLATION: Sink is installed above the countertop, an ideal choice if you are not replacing the counter; has a beautifully finished rim SINGLE BOWL: Bowl gives you uninterrupted space for washing and stacking dishes or other household tasks. 300 SERIES STAINLESS STEEL: Designed for everyday use. QUIET: Sound-deadening pad(s) minimizes sound and vibration for a quieter time at the sink; U-CHANNEL INSTALLATION: Mounting clips placed inside the channel before installation mean less time under the sink for an easier install; MADE IN THE USA: This Elkay product is proudly made in the USA; DRAIN OPENING: Sink drain opening measures 3-1/2 in.; DRAIN OPENING: Sink drain opening measures 3-1/2"