Kohler Underscore® 72 x 36 in. Drop-In Air Bathtub with Center Drain


  • Airjets 122 release thousands of bubbles that surround, support and massage the body
  • Center drain
  • Generous 6' length provides an incredibly spacious bathing area
  • Immediate and manual purge cycles remove residual water from air channels after use
  • Lighted keypad
  • Molded lumbar support offers extra comfort while bathing
  • Requires Kohler® K-7271 or K-7272 ClearFlo™ slotted overflow bath drain - (sold separately)
  • Slotted overflow allows for deep soaking
  • Variable-speed blower lets you adjust massage intensity to 18 levels
  • Zones of Control™ feature allows you to target massage to back and midsection or feet


Call for Pricing
ADA Compliant No
AMP 15
ANSI Specifications ANSI Z124.1.2
ASME Specifications ASME A112.19.7
ASTM Specifications ASTM E-162, ASTM E-662
CARB OTC LEED Compliant No
CSA Certified CSA B45.10, CSA B45.5
Capacity 112.9 gal
Collection Underscore®
Color Finish Biscuit
Color Finish Category Neutrals
Drain Location Center
Height 23 in
IAPMO Listed Yes
Installation Type Drop-in
Length 72 in
Material Acrylic
Number Of Jets 122
UL Listed Yes
Volts 240V
Watts 300
Width 36 in