For demanding commercial washrooms, Zurn's AquaSpec deck-mount lavatory faucet is a clean choice. Constructed of a durable, lead-free cast brass body, AquaSpec faucet valves contain a unique, heavy-duty quarter-turn ceramic disc cartridge. The cartridge is so durable, you can expect it to last up to one million cycles… and it's backed by our limited lifetime warranty. The 4-inch centerset Z812B4-XL features a 5 3/8-inch stationary or swinging gooseneck spout. It has integral shanks, two vandal-resistant, color-coded 4-inch wrist blade handles, and a polished chrome-plated finish. It comes with a standard 2.2 gpm pressure-compensating aerator. Alternate flow rates are as low as a water-saving 0.35 gpm with vandal-resistant, pressure-compensating spray, aerator, or laminar flow outlets. Whether you're outfitting a commercial restroom, a healthcare facility, or any other type of lavatory, its durability and customizable options make the Z812B4-XL a perfect, long-lasting solution.