Kohler K-98741 Guide D'installation Et D'entretien page 11

Ceiling Joist
2x4
2x6
Cut/Modified
Ceiling
Joist
Finished
Ceiling
5. Install the Finished Ceiling
Build a 5" (127 mm) typical drop sill (including finished ceiling
material) around the mounting cradle using cut/modified 2x6
lumber.
Install the water-resistant wallboard.
IMPORTANT! The rough opening (cutout) size must be within
specified limits (refer to cutout dimensions shown above). The seal
will not cover gaps greater than 1/4" (6 mm).
IMPORTANT! The pressure balancing loop(s) must be centered
within 1/8" (3 mm) with the pipe nipples evenly spaced from the
edges of the rough opening.
Cut out a 20-1/4" (514 mm) to 20-1/2" (521 mm) square at the
desired installation location.
Install the finished ceiling material (if using tile).
Double check that the finished drop sill is the proper height
relative to the cradle. The depth from the bottom of cradle to the
finished surface should be between 3-1/2" (89 mm) and 3-3/4"
(95 mm).
Kohler Co.
Finished Pressure
Ceiling Balancing
Loop
2x4
20-3/8" +/– 1/8"
(518 mm +/– 3 mm)
Cutout
Nipple
11
5" (127 mm) Typical
4-7/8" (124 mm) Min
3-5/8" (92 mm) Typical
3-1/2" (89 mm) Min
20-3/8"
+/– 1/8"
(518 mm
+/– 3 mm)
Cutout
1207716-2-C