Kohler K-3615 Dune Gabrielle 1.28 GPF One-Piece Elongated Comfort Height Toilet with AquaPiston Technology - Seat Included

- Item #: BCI1740680

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  • How to remove and install a Toilet
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This product has additional required/recommended options. To configure, add to your cart.

  • Angle Supply Recommended
  • Wax Ring Kit Required

Product Features:

  • One-piece configuration provides a uniform look and simplifies installation
  • Elongated bowl offers comfort and convenience, extending out an extra 1-1/2" compared to a round configuration
  • Covered under Kohler's 1 year limited warranty
  • The Gabrielle toilet combines straightforward design and high-powered, efficient performance
  • 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
  • Includes a Grip-Tight Reveal Q3 seat and cover

Product Technologies / Benefits:

  • 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.

Product Specifications:

  • Overall Height: 28" (measured from bottom of base to top of tank)
  • Overall Depth: 28-3/8" (measured from back of tank to front of rim)
  • Overall Width: 18-3/4" (measured from rightmost to leftmost edge of toilet)
  • Bowl Height: 16-1/4" (measured from floor to bowl rim)
  • Flow Rate: 1.28 GPF (gallons per flush)
  • Water Area: 11" x 8-1/2" (inner rim dimensions of bowl, length x width)
  • Water Depth (from Rim): 6"
  • Tank Width: 18-3/4" (measured from leftmost to rightmost edge of tank)
  • Tank Depth: 7" (measured from back edge to front edge of tank)
  • Trapway (Discharge Passageway) Size: 2-1/8"
  • Distance Between Toilet Seat Installation Holes: 5-1/2"
  • Rough-In: 12"


  • K-3615: This model
  • K-3615-RA: This model with right hand trip lever
  • K-3615-Touchless: This model with Touchless flush
  • K-3825: This model with bidet seat

About Kohler:

Gracious living is characterized by qualities of charm, good taste, generosity of spirit, and the enhancement of nature. It is Kohler's mission that you improve your sense of gracious living with every experience you have with a Kohler product or service. Kohler lives on the leading edge of design and technology, while maintaining a constant level of quality, regardless of price. It sets the standard of excellence in its field, and yet is constantly striving to improve. From sustainable products in the kitchen and bath to power systems that protect data centers and urban landscapes all over the world - this is what the Kohler company is all about.

Additional Kohler Links

Our SKU: Kohler K-3615

This product is listed under the following manufacturer number(s):

  • Kohler K-3615-47
  • Kohler K-3615-96
  • Kohler K-3615-7
    Black Black
  • Kohler K-3615-K4
  • Kohler K-3615-NY
  • Kohler K-3615-HW1*
    Honed White
  • Kohler K-3615-95
    Ice Grey
  • Kohler K-3615-55*
    Innocent Blush
  • Kohler K-3615-33
    Mexican Sand
  • Kohler K-3615-G9
  • Kohler K-3615-6*
  • Kohler K-3615-Y2*
  • Kohler K-3615-NG*
    Tea Green
  • Kohler K-3615-58
    Thunder Grey
  • Kohler K-3615-0

*Denotes a finish or option that has been discontinued

Kohler K-3615-NY Product Specifications

Specification Sheet
Bowl Height 16.25
Bowl Shape Elongated
Comfort Height Yes
Concealed Trapway No
Configuration One Piece
Country Of Origin USA
Depth 28.375
Flush Type Gravity Flush
Gallons Per Flush 1.28
Height 28
Installation Type Floor Mounted
Insulated Tank No
Length 28.375
Made in America Yes
Material Vitreous China
Product Weight 105
Rough In 12
Seat Included Yes
Soft Close No
Theme Basic
Trapway 2.125, 2.13
Trip Lever Placement Left
Water Efficient Yes
WaterSense Certified Yes
Width 18.75

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Kohler K-3615 Reviews

Rated 5 out of 5 by from Absolutely Awesome in every way! This toilet look great, especially in the honed white. But what really surprised me was how powerfully it flushed and the quality of the Customer Service. This design flushes far more effectively that any of the modern "low capacity" (thanks to our federal government) toilets I have seen. Really as well as the old 5 gallon type. Separately, there was a problem with the toilet seat (cracked) and toilet top (white instead of honed white), the latter which I did not notice until installing 2 months after purchase. I must say the Customer Service Rep - Michael, was superb - helpful in every way. I would definitely recommend this toilet and definitely recommend this reseller.
Date published: 2014-02-01
Rated 5 out of 5 by from Customers very pleased. We've installed several of these in the last year. People love the height, seat position, flush power, cleanability. One-piece installs quickly in one hour or less to set after rough-in or as a replacement. We'll see on longevity of Aqua-Piston design without traditional flapper.
Date published: 2014-09-15
  • Is the seat that is included a "quiet close"?

    A. The Kohler K-3615 is not with a quiet close seat.
  • Is the seat that is included "quiet close"?


    The Kohler K-3615 does come with a quiet close seat.

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