Install Wooden Blocking for Fixtures

What happens here

As a final structural preparation, the plumber installs a piece of wooden blocking (typically a 2x4 or 2x6) horizontally between two wall studs. This blocking serves as a robust backing for mounting future fixtures, such as a shower valve, vanity, or other heavy wall-mounted items. He uses the cordless drill and wood screws to securely fasten the blocking to the studs.

Goal: Provide solid backing for future fixture installation