Rough-In Guide

Product Information
Applicable product:
Drop in rim style, custom pump location K-1257-HB
Fixture:*
Bathing well:
Basin area, bottom 50″ (127 cm) x 24″ (61 cm)
Basin area, top 65″ (165.1 cm) x 27″ (68.6 cm)
Weight 115 lbs (52 kg)
To overflow:
Water depth 14″ (35.6 cm)
Capacity 72 gal (272.5 L)
* Approximate measurements for comparison only.
Drop-in cut-out 70″ (177.8 cm) x 34″ (86.4 cm)
Pump: V Hz A
1-speed 120 60 7.5
Heater 1.5 kW 120 60 12.5
Required Electrical Service (2 required)
Two dedicated circuits required, each protected with Class A
Ground-Fault Circuit-Interrupter (GFCI):
Pump/control 120 V, 15 A, 60 Hz
Heater 120 V, 15 A, 60 Hz
Locate the outlets behind the whirlpool and within 24″ (61 cm)
of the pump.
Notes
Install this product according to the installation guide.
Floor support under whirlpool must provide for a minimum of
41 lbs/square foot (199.6 kg/square meter) loading.
The apron must be installed before the finished floor and wall
materials are installed.
A minimum access panel is required as illustrated. This should be
20″ (50.8 cm) wide and 15″ (38.1 cm) high. Locate the access panel
at the pump location.
This fixture conforms to ANSI Standard Z124.1.2. All dimensions
are nominal.
36" (91.4 cm)
K-1257-HB
1" (2.5 cm)
Pump/Control Access
10-1/4" (26 cm)
72" (182.9 cm)
1-1/2" OD
18"
(45.7 cm)
7-1/2"
(19.1 cm)
20" (50.8 cm) W x
15" (38.1 cm) H Min
Recommended faucet area.
No change in measurements with drain
shown. (K-7166-AF or K-7166M-AF)
1-13/16"
(4.6 cm)
3-1/2"
(8.9 cm)
3"
(7.6 cm)
2-7/8"
(7.3 cm)
20"
(50.8 cm)
18-1/2"
(47 cm)
1-1/2"
(3.8 cm)
Drop-In
Rim Detail
1012658-1-C 2 Kohler Co.