
Features
•
One-piece toilets integrate the tank and bowl into a seamless,
easy-to-clean design.
•
Compact elongated bowl offers added room and comfort.
•
Comfort Height® feature offers chair-height seating that makes
sitting down and standing up easier for most adults.
•
1.28 gallons per flush (gpf).
•
Concealed trapway and Clean Caps® facilitate easier cleaning
and enhanced design.
•
Right-hand Polished Chrome trip lever included.
•
Glenbury™ Quiet-Close™ seat with Quick-Release™ functionality
allows seat to close quietly and quickly unlatch from the toilet
for easy removal and convenient cleaning.
•
Coordinates with other products in the Kathryn collection.
Technology
•
Single-flush gravity uses the force of gravity and a
precision-engineered tank, bowl, and trapway to create a strong
siphon during flushing.
•
AquaPiston canister allows water to flow into the bowl from all
sides (360 degrees), increasing the power and effectiveness
of the flush.
•
Flush valve's 3:2 ratio harnesses the natural force of gravity
and optimizes flush performance.
•
Durable canister design has 90% less exposed seal material
than a 3-inch flapper, for leak-free performance.
•
Light-touch canister flush requires a lower actuation force than
a flapper.
Installation
•
Standard 12-inch rough-in.
•
Supply line not included.
Kathryn® Comfort Height
Comfort Height® Toilet
K-3940-RA
Codes/Standards
ASME A112.19.2/CSA B45.1
DOE - Energy Policy Act 1992
EPA WaterSense
California Energy Commission (CEC)
ADA
ICC/ANSI A117.1
CSA B651
OBC
KOHLER® One-Year Limited Warranty
See website for detailed warranty information.
®
®
Water Conservation & Rebates
•
WaterSense® toilets meet strict EPA flushing guidelines,
including using at least 20 percent less water than 1.6-gallon
toilets.
•
Eligible for consumer rebates in some municipalities.
Available Colors/Finishes
Color tiles intended for reference only.
Recommended Products/Accessories
K-75796 Cachet® Nightlight Quiet-Close™ Elongated Toilet Seat
K-4108 C3®-230 Elongated Cleansing Toilet Seat
K-9131-R Trip Lever
1023457 Wax Ring/Hardware Kit
1265114 Connector Hose
1-800-4KOHLER (1-800-456-4537)
Kohler Co. reserves the right to make revisions without notice to product specifications.
For the most current Specification Sheet, go to www.kohler.com.
2-10-2019 09:24 - US/CA
DescriptionCodeColor
White0
Biscuit96
Almond47

Kathryn® Comfort Height
Comfort Height® Toilet
K-3940-RA
®
Technical Information
All product dimensions are nominal.
One-pieceToilet type:
ElongatedBowl shape:
2-1/8" (54 mm)Trap passageway:
Water Consumption
1.28 gpf (4.8 lpf)Full:
10-1/2" x 7-1/2" (267 mm x 191 mm)Water surface size:
5-5/8" (143 mm)Rim to water surface:
12Rough-in:
5-1/2" (140 mm)Seat-mounting holes:
Notes
Install this product according to the installation
instructions.
For back-to-back toilet installations: Use only a
45° double wye fitting.
ADA, OBC, CSA B651 compliant when installed
to the specific requirements of these regulations.
Plumbing codes may require elongated toilets
and elongated, open-front seats in public
bathrooms.
Accessibility standards may require controls to
be located on the open side of the toilet.
1-800-4KOHLER (1-800-456-4537)
Kohler Co. reserves the right to make revisions without notice to product specifications.
For the most current Specification Sheet, go to www.kohler.com.
2-10-2019 09:24 - US/CA