Novatto SAN SALVADOR Copper Bar Sink, Antique Square bar and prep sink with flat lip; Hand-hammered antique finish Drop-in or Undermount installation Artisan hand crafted; 16-gauge recycled copper construction Approximate dimensions due to handmade craftsmanship: Outer 15 by 7-inches; Inner 12 by 6.5-inches 3.5-inch drain opening; Standard U.S. plumbing connection; Limited lifetime warranty