4" centerset,deck mount lavatory single lever faucet,polished chrome brass body with integral spout,2.2 GPM aerator,ceramic cartridge with adjustable temperature limit stop,single lever handle and 1/2" NPSM male inlets with coupling nuts. Certified to ASME A112.18.1/CSA B125.1,NSF 61-Section 9 and NSF 372. Meets ADA ANSI/ICC A117.1 requirements.