Toto Lt501.401 Drop-in Lavatory Oval Cotton

Product Description

The TOTO lt501.4#01 is a self-rimming, drop-in vitreous china lavatory designed for residential bathroom installations. The oval single-bowl sink measures 20 inches overall with a bowl size of 15.25 inches x 11.125 inches x 8.25 inches deep, providing a practical handwashing basin in a compact footprint. Finished in Cotton white, it features a 3-hole configuration with 8-inch faucet center spacing and a 1.25-inch drain opening. This lavatory meets ASME A112.19.2 and CSA B45.1 standards and carries an IAPMO listing, making it appropriate for permitted residential plumbing work. Licensed plumbers and remodeling contractors are the typical installers.

This lavatory is suited for residential bathroom vanity countertop installations where a drop-in sink is specified. The 3-hole, 8-inch faucet center layout accommodates standard widespread faucet sets. The Cotton finish coordinates with traditional and transitional bathroom designs. With a sink depth of 9.25 inches and an overall size falling in the 20-inch to 25.99-inch range, it fits standard vanity cutouts in that size class. ADA compliance makes it a viable option for accessible bathroom projects where a self-rimming lavatory is acceptable under the applicable accessibility standard.

Key Features

• Drop-in self-rimming installation requires a countertop cutout and no visible mounting hardware from above
• Oval single-bowl design with a 15.25 x 11.125 x 8.25 inch bowl and 9.25 inch sink depth
• 3-hole configuration with 8-inch widespread faucet center spacing
• 1.25-inch drain opening compatible with standard lavatory drain assemblies
• ADA compliant per applicable accessibility requirements
• Listed to ASME A112.19.2 and CSA B45.1 with IAPMO certification

Compatibility

Designed as a drop-in replacement or new-installation lavatory for residential bathroom vanity countertops accepting a sink in the 20-inch to 25.99-inch size range with a 3-hole, 8-inch faucet center cutout pattern.

Installation Notes

Installation is performed by a licensed plumber in accordance with the International Plumbing Code and applicable local codes. Shut off the water supply and drain the lines before removing any existing fixture. The countertop cutout must match the sink rim dimensions and support the weight of the basin. Apply plumber's putty or silicone sealant under the rim per the manufacturer installation instructions to ensure a watertight seal before securing the mounting clips.

Technical Specifications

• Color Finish: Cotton
• Installation Type: Drop-In Self-Rimming
• Shape: Oval
• Number of Bowls: 1
• Number of Holes: 3
• Faucet Center Size: 8 inches
• Sink Bowl Size: 15.25 inches x 11.125 inches x 8.25 inches
• Sink Depth: 9.25 inches
• Drain Opening: 1.25 inches
• ADA Compliant: Yes
• ASME Standard: ASME A112.19.2
• CSA Certified: CSA B45.1
• IAPMO Listed: Yes

Standard Information

• Brand: TOTO
• Manufacturer Part Number: lt501.4#01