
One-piece compact elongated dual-flush toilet
Features
•
One-piece toilets integrate the tank and bowl into a seamless,
easy-to-clean design.
•
Compact elongated bowl offers added comfort while occupying
the same space as a round-front bowl.
•
Standard height.
•
Top-mount dual-flush actuator offers a choice of 0.8 or 1.28 gpf
(3.0 or 4.8 lpf).
•
2" (51 mm) fully-glazed trapway.
•
Fully-skirted trapway simplifies cleaning.
•
Hidden cord design conceals cleansing seat cords.
•
Alternative option available: Reach Up with non-hidden cord
design (K-23188).
Installation
•
Standard 12" (305 mm) rough-in.
•
Supply line sold separately.
•
Cleansing seat sold separately.
Recommended Products/Accessories
1265114 Connector Hose
1023457 Wax Ring/Hardware Kit
K-27142-CR C³®-430 nightlight heated elongated cleansing toilet
seat
K-26132-CSP C³®-420 Heated elongated cleansing toilet seat
Reach Up
K-23188-HC
Codes/Standards
ASME A112.19.2/CSA B45.1
ASME A112.19.14
DOE - Energy Policy Act 1992
EPA WaterSense
California Energy Commission (CEC)
®
™
KOHLER® Toilets and Seats Limited
Warranty
See website for detailed warranty information.
Available Colors/Finishes
Color tiles intended for reference only.
DescriptionCodeColor
White0
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.
8-9-2020 12:27 - US/CA

C
L of Outlet
Front of Bowl
11-5/6"
(287 mm)
11-5/8"
(295 mm)
9-3/4" (248 mm)
2-1/2"
(64mm)
Use a 45° double
wye fitting.
For Back-to-Back Toilet Installations
Do not use a
double sanitary tee.
27-9/16" (700 mm)
5/8"
(16 mm)
6-1/6"
(154 mm)
15-9/16"
(395 mm)
7-7/8" (200 mm)
3/8" NPT
Supply
9"
(229 mm)
29-9/16"
(751 mm)
12" (305 mm)
14-7/8"
(378 mm)
Reach Up
™
One-piece compact elongated dual-flush toilet
K-23188-HC
Notes
Install this product according to the installation
instructions.
Technical Information
All product dimensions are nominal.
FloorWaste Outlet:
Compact elongatedBowl shape:
Siphon jetFlush type:
2" (51 mm)Trap passageway:
Water Consumption
1.28 gpf (4.8 lpf)Full:
0.8 gpf (3 lpf)Reduced:
7-3/4" x 5-3/4" (197 mm x 146 mm)Water surface size:
5-13/16" (148 mm)Rim to water surface:
12" (305 mm)Rough-in:
Template:
5-1/2" (140 mm)Seat-mounting holes:
Footprint, 1392770-7, not required, not
included
Fixture Supply Requirements
20 psi (137.9 kPa)Min static pressure:
80 psi (551.6 kPa)Max static pressure:
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.
8-9-2020 12:27 - US/CA
15 psi (103.4 kPa)Min flowing pressure:
1 gpm (3.8 lpm)Min flow rate: