Nantucket Sinks UM-159-W Undermount Bathroom Sink

Product Description

The NANTUCKET SINKS UM-159-W is a rectangular undermount bathroom sink made from vitreous china with a durable enamel glaze finish in classic glossy white. It measures 17.125 x 11.25 inches overall with a 15 x 9 inch interior bowl and a 6.25 inch depth, delivering a deep scoop profile that aids drainage and maximizes usability in tight spaces. The sink includes an overflow port and requires a standard 1.75 inch drain opening with overflow, sold separately. An installation template is included. At 13 pounds, it is manageable for a single installer. Plumbers and finish carpenters typically handle undermount sink installations in residential bath remodels.

The UM-159-W is sized to fit a 21 inch vanity cabinet, making it a practical choice for compact powder rooms, small bathrooms, and space-constrained residential layouts. Its rectangular profile with clean lines suits contemporary and transitional bath designs alike. The deep bowl geometry keeps water contained and directed toward the drain. Dimensions may vary by up to 0.25 inches, consistent with vitreous china manufacturing tolerances. A mounting template is included to assist with countertop cutout layout.

Key Features

• Vitreous china construction with enamel glaze resists staining, scratching, and daily chemical exposure
• Overall dimensions: 17.125 x 11.25 inches; interior bowl: 15 x 9 inches; bowl depth: 6.25 inches
• Integrated overflow port compatible with standard overflow drain assemblies
• Standard 1.75 inch drain opening accepts widely available drain hardware
• Installation template included for accurate countertop cutout
• Limited lifetime warranty from the manufacturer

Compatibility

Designed as an undermount drop-in replacement or new-install sink for 21 inch vanity cabinets in residential bathroom applications. Drain assembly with overflow is not included and must be sourced separately.

Installation Notes

Installation is typically performed by a licensed plumber or experienced finish contractor. Shut off the water supply and confirm countertop material suitability for undermount mounting before beginning. Use the included template to mark and cut the countertop opening precisely. Silicone adhesive and undermount clips or brackets are the standard fastening method for this sink type; follow countertop manufacturer guidelines for appropriate adhesive selection.