The sunstone over under single sink is entirely hand-built constructed with 304 stainless steel 16,18, 20 gauge material grades, it is uniquely designed as outdoor friendly with its included sturdy cover with handle and is made to match with other sunstone sinks and ice box. This sink has a zero radius design square which adds a modernistic element to your indoor or outdoor kitchen, with 90 degree angles and sharp edges. For easy installation, all mounting hardware is provided along with spec. The extra-deep sink basin with cover is constructed with all 16 gauge and 20 gauge sink basin far thicker than deep-drawn sink types. Experience sunstone quality redefined and make your new kitchen dream come to life.16 Gauge 304 stainless steel for sink frame 18 Gauge 304 stainless steel for sink cover 20 Gauge 304 for sink basin 304 Stainless steel structure Sturdy cover includedDepth: 20-1 2 Faucet Holes: 1 Height: 11-1 2 Material: Stainless Steel Number of Basins: 1 Type: Single Width: 20-1 2