SPECS & APPLICATION: This SUNGATOR pex washing machine outlet box is equipped stainless steel hammer arrestors, which prevents pipes from shaking and pounding to reduce noises produced by washing machines. The box allows for inverted installation and provides solutions for a range of residential washing machine applications. It features a recessed design and a snap on frame which accommodates to drywall. SAFE TO USE: SUNGATOR pex washing machine outlet box conforms to American standards; meets UPC and NSF requirements. The shut off valves are made of premium brass, which is safe for water distribution.