8" concealed bypass mixing valve with brass body, polished chrome plated brass adjustable wall flanges and sleeves, 1/2" NPT female outlet, compression cartridges with spring checks, 4-arm handles, and 1/2" NPT female union inlets. Certified to ASME A112.18.1/CSA B125.1, NSF 61-Section 9 and NSF 372. Meets ADA ANSI/ICC A117.1 requirements.