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Kathryn 1.28 GPF One-Piece Elongated Comfort Height Toilet with AquaPiston Technology - Seat Included

Kathryn 1.28 GPF One-Piece Elongated Comfort Height Toilet with AquaPiston Technology - Seat Included



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List price: List price: $1,168.12
GoSource price: GoSource price: $1,010.82
List price: List price: $1,168.12




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Product Description

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 Kathryn Collection features angular lines and molded edges, capturing the classic look and feel of the 1930s
  • 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
  • Includes a Grip-Tight Glenbury 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.
  • Low-Profile Bolt Caps: Offer a more sleek appearance, replacing the standard gum-drop style bolt caps. Also much easier to clean around.

Product Specifications:

  • Overall Height: 28-5/8" (measured from bottom of base to top of tank)
  • Overall Depth: 28" (measured from back of tank to front of rim)
  • Overall Width: 17-1/2" (measured from rightmost to leftmost edge of toilet)
  • Bowl Height: 16-3/8" (measured from floor to bowl rim)
  • Flow Rate: 1.28 GPF (gallons per flush)
  • Water Area: 10-1/2" x 7-1/2" (inner rim dimensions of bowl, length x width)
  • Water Depth (from Rim): 5-5/8"
  • Tank Width: 17-1/2" (measured from leftmost to rightmost edge of tank)
  • Tank Depth: 7-1/8" (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-3940: This model
  • K-3940-Touchless: This model with Touchless flush

Dimensions and Measurements

  • Bowl Height
  • 16.375 in.
  • Depth
  • 28 in.
  • Gallons Per Flush
  • 1.28
  • Height
  • 28.625 in.
  • Product Weight
  • 45 lbs.
  • Rough In
  • 12 in.
  • Trapway
  • 2.125 in.
  • Width
  • 17.5 in.

Included Components

  • Angle Supply Included
  • No
  • Seat Included
  • Yes

Characteristics and Features

  • Bowl Shape
  • Elongated
  • Configuration
  • One Piece
  • Design Features
  • Concealed Trapway, Chair Height
  • Flush Type
  • Gravity Flush, Siphon Jet
  • Installation Type
  • Floor Mounted
  • Material
  • Vitreous China
  • Seat Front
  • Closed
  • Theme
  • Traditional
  • Trip Lever Finish
  • Chrome
  • Trip Lever Placement
  • Left

Warranty and Product Information

  • ADA
  • Yes
  • Approved for Commercial Use
  • No
  • CA Drought Compliant
  • Yes
  • Collection
  • Kathryn, Comfort Height
  • Country Of Origin
  • USA
  • TX Drought Compliant
  • Yes
  • WaterSense Certified
  • Yes
For any questions about our products or assistance with bulk purchasing, please don't hesitate to reach out to us at:
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