Kohler K-1913 Guide D'installation page 7

Construct the Framing (cont.)
NOTE: Drain 3, the drip tray drain, requires a 10" (25.4 cm) x 10" (25.4 cm) cutout if access from below is
available. If above-the floor access is required to make the connections, a 10" (25.4 cm) x 16" (40.6 cm)
cutout is required to allow access.
Make sure the flooring offers adequate support for the bath, and verify that the subfloor is flat and
level. Refer to the rough-in document for details.
The bath should be installed in an alcove installation. Construct a 2x4 or 2x6 frame in accordance
with the roughing-in information packed with the bath.
Position the plumbing according to the roughing-in information. Cap the supplies, and check for
leaks.
Kohler Co. 7 1128532-2-C