Kohler Composed K-T73087-4-CP Installation Instructions Manual page 5

NOTICE: Adequate floor support is required. Standard 2x6 lumber is NOT sufficient
for this application.
NOTE: The wood support must be a minimum of 2" (51 mm) thick by 6" (152 mm)
wide.
NOTE: Concrete can be used as the floor support, as long as the faucet base will be
below the finished floor level.
Plan out the bath filler placement based on the dimensions above.
Cut a hole in the subfloor that is large enough to install the wood support
between two floor joists.
Secure a wood support located 2-1/4" (57 mm) to 3-1/16" (78 mm) below the top of
the finished floor.
Kohler Co. 5
1443292-2-B