The Single Bowl Drop-In Stainless Steel Kitchen Sink features high quality construction and extensive selection come together in 2000 Series. Strong 20-gauge stainless steel serves as a solid base for a wide array of design options. Exceptional sound deadening and wear-resistant uniform brushed finish - backed by a limited lifetime warranty - assure the functionality and beauty last. Stainless steel construction Drop-In installation Drain Size: 3 5/8" U-channel mounting system QuickMount installation included Constructed from 20 gauge stainless steel Center drain location increases available space under the sink Mounting brackets included, no other hardware included Features SoundSHIELD assuring exceptional noise reduction and quiet dependability Codes/Standards ASME A112.19.3 CSA B45.4 Key Features & Innovations SoundSHIELD All stainlees steel sinks feature SoundSHIELD, a sound-deadening system that offers exceptional noise reduction and quiet dependability. Buy American Act Products identified with this icon comply with the Buy American Act.