Design House 545798 is a middleton single handle shower faucet that can be installed in place of an old faucet to allow users to adjust the water temperature and flow rate with a single handle. The installation process involves shutting off the main water supply, preparing the assembly components, wrapping threaded connections with Teflon tape, placing the handle on the valve stem, removing the red rotational limit stop, adjusting the water temperature, sliding the escutcheon over the trim sleeve, fastening the escutcheon to the faucet body, sliding the handle onto the shaft, inserting the screw through the handle and threading it to the faucet body, inserting the button over the set screw, threading the shower head onto the shower arm, and turning on the hot and cold water lines to check for leakage.