The effortless enjoyment of Gerber® Plumbing Fixtures floor mount tub fillers begins with the simple installation of the rough-in valve. The rough-in valve can be installed in any direction as long as the bathtub center line is aligned with one of the six screws on the plaster guard. The plaster guard has a flat top for easy leveling in installation to ensure the trim will be standing straight after installation. A test cap and plugs are included for pressure testing the connection between the rough-in valve and water supply lines.