Pared down, practical and nothing short of perfect, the Atrio® Faucet Collection is the ultimate fusion of sophisticated design and precision performance you've come to expect from GROHE. Defined by cylindrical shapes that are, at once, modern, timeless, and in perfect harmony, nothing satisfies like the beauty of Atrio®. GROHE Valve Trim, Atrio®, 6.1 gpm Shower Flow Rate, Lever, 6-11/16 in Dia x 2-3/4 to 3-7/8 in D Trim, Pressure Balanced Valve/Cartridge, 1 Spray Functions, 45 psi, Wall Mount, For Use With: GrohFlex™ Model 35 026 000 Universal Rough-In Box, StarLight® Polished Chrome, Import