Kohler KOH20538 Specifications

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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.
Lighted keypad control.
Integral lumbar support.
Slotted overflow allows for deep soaking.
Automatic and manual purge cycles remove residual water from air channels after use.
Material
Acrylic.
Hydrotherapy
BubbleMassage™.
Installation
Requires K-7271 or K-7272 Clearflo slotted overflow bath drain (sold separately).
Reversible drain.
Drop-in or undermount.
Under-mount installation requires kit K-534 (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
1013469 Trim Ring, Interface, Core K-1491 Bath/Whirlpool Pillow K-1601 Bath/whirlpool footstop, removable K-1705 Whirlpool/BubbleMassage Remote Control K-534 Under-Mount Installation Kit K-9498 3" 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 UL 1795
KOHLER® Plastic Baths and Receptors Lifetime Limited WarrantyKOHLER® Hydrotherapy Components Five-Year Limited Warranty
See website for detailed warranty information.
Available Colors/Finishes
Color tiles intended for reference only.
Color Code Description
G9 Sandbar K4 Cashmere
Underscore® Rectangle
60" x 36" drop-in BubbleMassage™ air bath
K-1849-G
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 16:06 - US//CA
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Underscore® Rectangle
60" (1524 mm)
21" (533 mm)
36" (914 mm)
2-7/16" (62 mm)
18" (457 mm)
1-15/16" (49 mm)
12-5/8" (321 mm)
13/16" (21 mm)
4-1/8" (105 mm)
No change in measurement if connected with drain illustrated. (K-7272)
1-1/2" Bath Drain
Blower Motor/Control Access 30" (762 mm) W x 15" (381 mm) H Min
Lumbar Angle 40°
20" (508 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, Under-mount Drain location: End Basin area, bottom: 39-9/16" x 24-11/16" (1005 mm x
627 mm)
Basin area, top: 53-5/8" x 29-1/2" (1362 mm x 749 mm) Weight: 100 lbs (45.4 kg) Minimum floor load: 54 lbs/ft² (263.7 kg/m²) Water depth: 17-1/8" (435 mm) Water capacity: 81.1 gal (307 L) Cutout: Drop-in, 59-1/2" x 35-1/2" (1511 mm x
902 mm)
Electrical component
rating:
Blower: 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.
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.
60" x 36" drop-in BubbleMassage™ air bath
K-1849-G
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 16:06 - US//CA
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