Kohler K-28238-GKE Installation Instructions Manual page 12

Mounting
Collar
Trim
Sleeve
Escutcheon
4. Dry Fit the Shower Column
Snap a trim sleeve onto each mounting collar.
Verify that an O-ring is installed in each escutcheon.
Carefully slide an escutcheon onto the upper connection
assembly.
Thread a mounting collar onto the upper connection assembly.
Repeat steps for the lower mounting collar and escutcheon.
Carefully slide the shower column onto the supply adapter.
Ensure the lower mounting collar is tight against the finished
wall.
Proceed to section "Plumb the Shower Column."
1189046-2-A
Supply
Adapter
Shower
Column
10 Kohler Co.