Kohler Tresham 1.28 GPF Elongated One-Piece Comfort Height Toilet with AquaPiston Technology and Right Hand Trip Lever

Kohler K-3981-RA Features:

One-piece configuration provides a uniform look and simplifies installation
Compact-elongated bowl offers comfort and convenience of an elongated bowl while occupying the same space as a rount-front bowl
Covered under Kohler’s 1 year limited warranty
Constructed of durable, easy to clean vitreous china
Installs in a floor mounted configuration
Features a powerful gravity flush with AquaPiston technology
ADA compliant – complies with the standards for toilets set forth by the Americans with Disabilities Act
Comfort Height – designed for ease of use, with a higher than average bowl
WaterSense certified – toilet uses 20% less water than the current standard while still maintaining superior performance
Concealed trapway – a built-in skirt hides the discharge passageway from view, for a smoother, less utilitarian appearance
Skirted trapway simplifies cleaning
Includes a soft close seat with cover

Product Technologies / Benefits:

Easy to Clean: One-piece toilets integrate the tank and bowl into a seamless easy-to-clean design. Because the toilet’s shape has fewer crevasses than two-piece models, there are not as many spaces for dirt to hide. This model also features a fully skirted trapway, meaning that the sides of the toilet are smooth and flat. This feature simplifies cleaning and offers a look that is aesthetically pleasing as well.
Simplified Installation: The Tresham one-piece toilet features an innovative trapway installation system. The system anchors the toilet to the floor for a secure, caulk-free installation. The standard 12″ rough-in requires no drilling, no special tools and is easy to install on all floor types. There are also kits available to accommodate 10 and 14 inch rough-in installations.
AquaPiston: AquaPiston single flush canister technology uses the force of gravity and a precision-engineered tank, bowl, and trapway to create a strong, efficient siphon during flushing. The canister flush valve’s 3:2 ratio optimizes flush performance and resists warping and deterioration, while its durable design features 90% less exposed seal material than a standard 3-inch flapper flush valve, guaranteeing leak-free performance. The light-touch canister requires lower activation force than a flapper, and once activated, allows water to flow into the bowl from all sides (360 degrees), increasing each flush’s power and effectiveness.
Comfort Height: Comfort Height toilets offer the greatest accessibility and ease of use with a bowl height of between 16-1/2″ and 18″, the same as a standard chair.
WaterSense Certified Product: To help make a difference on a global scale and to further its role as an industry leader in eco-performance practices, Kohler has established partnerships with a number of environmental organizations, including WaterSense. Many Kohler faucets and toilets are equipped with low-flow technology – they use less water, while continuing to meet superior performance standards.

Kohler K-3981-RA Specifications:

Overall Height: 28-1/2″ (bottom of base to top of tank)
Overall Depth: 28-1/4″ (back of tank to front of rim)
Overall Width: 17-5/16″ (rightmost to leftmost edge of toilet)
Bowl Height: 16-1/2″ (floor to bowl rim)
Flow Rate: 1.28 GPF
Water Area: 9-5/8″ x 6-7/8″ (inner rim dimensions of bowl, length x width)
Water Depth (from Rim): 5-3/8″
Tank Width: 17-5/16″ (leftmost to rightmost edge of tank)
Tank Depth: 7-11/16″ (back edge to front edge of tank)
Trapway (Discharge Passageway) Size: 2-1/2″
Distance Between Toilet Seat Installation Holes: 5-1/2″
Rough-In: 12″

Additional Kohler Links
View the Manufacturer Warranty
Browse all Kohler Products
Kohler Tresham Collection

Specifications