The Billings 18" undermount bar sink raises the bar on functionality and professional styling with options for custom accessories (sold separately) that integrate seamlessly within the bowl's ledge. The Billings sink is made of KOHLER Neoroc, a matte-finish composite material designed for extreme durability and unmatched beauty. Richly colored to complement any countertop, Neoroc resists scratches, stains, and fading and is highly heat- and impact-resistant. The sink's deep bowl has easy-to-clean rounded corners. Kohler K-33711 Features: Covered under Kohler's limited lifetime warranty Constructed of stone composite Undermount installation - sink will install under the countertop Single basin design for maximum work space Rear drain location increases available space under the sink Coordinates with products from the Billings line All mounting hardware required for assembly is included Kohler K-33711 Specifications: Sink Length: 17-1/2" (left to right) Sink Width: 18-5/16" (front to back) Sink Height: 8-5/8" (top to bottom) Basin Dimensions: 15-3/8" L x 15-9/16" W x 9" D Minimum Cabinet Size: 21" Drain Connection: 3-7/8"