Kohler 31110-58 Guide D'installation page 9

4"
(102 mm)
Finished
Ceiling
Finished
Ceiling
Cutout
4. Install the Dropped Ceiling
Construct a 4" (102 mm) minimum to 4-1/2" (114 mm) maximum
dropped ceiling in the shower area. The framed cutout should be
centered around the bracket, with the framing 18-1/8" (460 mm)
+/- 1/8" (3 mm) apart in both directions.
IMPORTANT! Risk of product damage. Ensure cutout and framed
opening of dropped ceiling meet the required dimensions listed. If
the finished ceiling thickness exceeds 4-1/2" (114 mm), shim behind
the mounting bracket.
Trim the inlet pipe to 1-1/4" (32 mm) above the plane of the
finished ceiling opening.
De-burr, clean, and lubricate the inlet pipe to prevent damage to
the water inlet gasket when the shower unit is installed.
Kohler Co.
Inlet Pipe
1-1/4"
(32 mm)
Ceiling
Joist
18-1/8"
(460 mm)
Cutout
9
18-1/8"
(460 mm)
1386786-2-A