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Features
•
122 airjets release thousands of bubbles that surround,
support, and massage the body.
•
Variable-speed blower lets you adjust massage intensity to
18 levels.
•
Zones of Control™ feature allows you to target massage to
back, midsection, or feet.
•
Chromatherapy lighting allows you to select a preferred color
scheme to suit your mood.
•
Lighted keypad control.
•
Spacious design accommodates up to two bathers.
•
Integral lumbar support.
•
Slotted overflow allows for deep soaking.
•
Automatic and manual purge cycles remove residual water
from air channels after use.
•
Center drain.
Material
•
Acrylic.
Hydrotherapy
•
BubbleMassage™.
•
Chromatherapy.
Installation
•
Requires K-7271 or K-7272 Clearflo slotted overflow bath
drain (sold separately).
•
Drop-in or undermount.
•
Under-mount installation requires kit K-593 (sold separately).
•
Requires 240 V hard-wired electrical service.
Required Products/Accessories
K-7271 Brass Slotted Overflow Bath Drain
or
K-7272 PVC Slotted Overflow Bath Drain
Recommended Products/Accessories
K-1491 Bath/Whirlpool Pillow
K-1601 Bath/whirlpool footstop, removable
K-593 Under-Mount Installation Kit
K-9497 2-1/2" Keypad Trim
K-24916 Wireless Music Kit
K-1177 Vinyl Tiling-in Bead
K-23726 Drain treatment
K-23732 Tub & shower cleaner
Codes/Standards
ASME A112.19.7/CSA B45.10
CSA B45.5/IAPMO Z124
ASTM E162
ASTM E662
UL 1795
KOHLER® Hydrotherapy
Components Five-Year Limited
Warranty
See website for detailed warranty information.
Underscore® Rectangle
72" x 36" drop-in BubbleMassage™ air bath
K-1835-GCR
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.
5-29-2021 16:03 - US
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Underscore® Rectangle
72" (1829 mm)
36"
(914 mm)
1-1/2"
(38 mm)
18"
(457 mm)
1"
(25 mm)
1/2"
(13 mm)
4-1/8"
(105 mm)
No change in measurement if connected with
drain illustrated. (K-7272)
1-1/2"
Bath Drain
23"
(584 mm)
NOTE: Blower protrusion beyond the rim.
1"
(25 mm)
36"
(914 mm)
Blower Motor/Control Access
30" (762 mm) W x
15" (381 mm) H Min
2-7/16"
(62 mm)
Lumbar
Angle 33°
22"
(559 mm)
Required Electrical Service
One dedicated circuit required, protected with Class A GroundFault Circuit-Interrupter (GFCI). Outside North America, this
device may be known as a Residual Current Device (RCD).
Blower: 240 V, 15 A, 50/60 Hz
Technical Information
All product dimensions are nominal.
Installation: Drop-in, Undermount
Drain location: Center
Basin area, bottom: 45-3/4" x 25-15/16" (1162 mm x
659 mm)
Basin area, top: 65-3/8" x 29-5/16" (1661 mm x 745 mm)
Weight: 107 lbs (48.5 kg)
Minimum floor load: 60 lbs/ft² (292.9 kg/m²)
Water depth: 19-7/16" (494 mm)
Water capacity: 112.9 gal (427.4 L)
Cutout: Drop-in, 71-1/2" x 35-1/2" (1816 mm x
902 mm)
Electrical component
rating:
Blower: 220-240 V, 5 A, 50/60 Hz
Blower speed: Variable
Notes
Measure your actual product for rough-in
details.
Install this product according to the installation
instructions.
The hot water supply should be 70% of the
capacity of the bath or greater. Installations will
vary.
Kit is required for under-mount installations
(sold separately).
If relocating the blower motor, do not relocate
or alter the PVC tee or coiled flexible tubing
connected to the blower. Follow the blower
relocation instructions exactly. Provide access
for servicing the blower.
72" x 36" drop-in BubbleMassage™ air bath
K-1835-GCR
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.
5-29-2021 16:03 - US
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