Rough In Guide

ManualsBrandsKOHLER ManualsBathUnderscore 4 ft. Air Bath Tub in Biscuit

Product Information

Cube VibrAcoustic BubbleMassage

bath

K-1969-GVB

Cube VibrAcoustic BubbleMassage

bath with Bask

TM and chromatherapy

K-1969-GVBCW

(shown)

Fixture: Approx. measurements for comparison only.

Basin area,

bottom

39-3/8″ (1000 mm) x 39-3/8″

(1000 mm)

Basin area, top 44-5/8″ (1134 mm) x 44-5/8″ (1134 mm)

Weight 160 lbs (72.6 kg)

Water depth 27-1/2″ (699 mm) to overﬂow

Capacity 171 gal (647.3 L) to overﬂow

Blower

motor/control

300 W 120 V 60 Hz 10 A

Ampliﬁer 15 W (per

channel)

120 V 50/60 Hz -

Heater 65 W 120 V 60 Hz 0.5 A

Required accessories: Cable drain AND K-8150

Cable drain trim kit K-8134

Optional accessory: Under-mount kit K-578

Drop-in cutout: 47″ (1194 mm) x 47″ (1194 mm)

Required Electrical Service: Dedicated circuit required,

protected with Class A Ground-Fault Circuit-Interrupter

(GFCI) or Residual Current Device (RCD):

Blower motor/heater/ampliﬁer: 120 V, 15 A, 60 Hz

Installation Notes

Install this product according to the installation guide. Ensure

that the bath, user interface, ampliﬁer, and transducers are

functional before completing the installation.

Control ampliﬁer ﬁts 16″ (406 mm) center studs. 25’ (7.6 m)

cables are included.

Locate the bath within 24″ (610 mm) of a GFCI-protected 120

V, 15 A grounded electrical outlet. A second grounded outlet

within the wall framing must be within 24″ (610 mm) of the

planned control ampliﬁer. One electrical service may be used

for the entire bath and related electrical components.

Hot water supply should be 70% of capacity or greater.

Installations will vary.

Floor support under bath must provide for a minimum of 97.9

lbs/square foot (478.2 kg/square meter) loading.

Fixture conforms to CSA B45.5/IAPMO Z124. All dimensions

are nominal.

48" (1219 mm)

1-5/8"

(41 mm)

1-1/2" Bath Drain

3-1/2"

(89 mm)

No change in measurements if connected

with drain illustrated. (K-8150)

24"

(610 mm)

48"

(1219 mm)

24"

(610 mm)

3-7/8"

(99 mm)

*10"

(254 mm)

*24"

(610 mm)

*Recommended User

Interface Location

5-5/8"

(143 mm)

3-1/2"

(89 mm)

7/8"

(22 mm)

User Interface

Control Amplifier

14-1/2"

(368 mm)

11-3/4"

(298 mm)

3-3/16"

(81 mm)

18-7/8"

(733 mm)

33"

(838 mm)

(25 mm)

Control Access

30" (762 mm) W x

15" (381 mm) H Min

(25 mm)

Drop-in Rim

Detail

Roughing-In

K-1969-GVB, K-1969-GVBCW

UNDERSCORE

CUBE VIBRACOUSTIC

BUBBLEMASSAGETM BATH

UNDERSCORE

CUBE VIBRACOUSTIC

BUBBLEMASSAGETM BATH

1216007-1-