Control your shower's water pressure easily with the Greyfield In-Wall Volume Control. To conserve water, simply turn the handle to dial back the amount of water being used. When you're ready to rinse, increase the volume for an effective, full-on spray. Pair this product with the Greyfield Thermostatic Shower Valve to complete the set. Metal handle. Wall thickness range: 1" to 1-3/4" For proper installation, requires use of a thermostatic valve and trim. Optional Rough-in Valve: Brass valve body. Ceramic cartridge. Recommended valve installation depth 1-5/8" to 2-3/8" Shop more of the Greyfield Collection