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Bath
Showers, Tubs, & Shower Systems
Tubs & Whirlpools
SKU: P001800970
Part #: K-1137-W1-7

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

Underscore® 72" x 42" Soaking Bathtub, Black

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Kohler

Underscore® 72" x 42" Soaking Bathtub

Backordered

$3,340 was~~$4,281.70~~

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As low as$116/mo.$116/mo.or 0% APR with Affirmor 0% APR with Affirm

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Specifications

Safety Listing(s)

UL Listed

Customer Reviews

5.0

Rated 5 out of 5 stars.

1 Review

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Rated 5 out of 5 stars.

Anonymous

Color:White

Beautiful tub and excited about the heater!

09/13/2025

Documents & Information

Installation And Assembly (pdf)
Specifications (pdf)

Additional Features

Create spa-like relaxation with soothing warmth on your back and neck.
Customize the heat with three adjustable heat settings
The clean, simple lines of the bath coordinate with a variety of products.
Slotted overflow provides a deeper bathing experience
Drop-in or under-mount installation, 110V electrical service required.
Refer to Spec Sheets for Required and Compatible parts to complete installation

Warranty

Commercial Warranty

Yes

Product Warranty

Yes

Full or Limited Warranty

Limited

Warranty Length

1 Year

Assembly

Mounting / Installation

Undermount, Drop-In

Mounting / Installation Required

Yes

Drain Placement

Center

Overall Dimensions

72'' L X 42'' W X 23'' H

Soaking Depth - Top to Bottom

19'' D

Overall Product Weight

91 lb.

Drain Diameter

1.5''

Features

Bath Therapy Type

Soaking

Product Type

Back to Wall

Overall Shape

Rectangle

Material

Acrylic

Overflow Hole

Yes

Handle(s) Included

No

Seat Included

No

Heater Included

Yes

Blower Included

No

Tank/Tub Capacity

139 gallons

Finish

Black

Streamlined for simplicity, this Underscore bath exudes refined style with contemporary flair. Its heated surface warms the back and neck with adjustable temperature settings to create a soothing, spa-like environment for two bathers. A slotted overflow drain allows for a luxuriously deep bath as you relax against the comfortable sloped backrest.

30-Day Return Policy

Not loving it? We offer returns for most items within 30 days of delivery for a refund or store credit.

Design Details

Overflow Hole