OATEY 38531 Quadtro, 1/4 Turn, CPVC Washing Machine Outlet Box – Standard Pack

Yes. The Quadtro accepts top or bottom valve mounting, so you can feed it from the crawlspace or basement below as easily as dropping supplies from an attic. That flexibility is the main reason it gets specified on multi-family retrofits where the existing supply routing is already set.

No, 4 support brackets come in the box for mounting. You fasten them to the studs on either side of the bay to set the box at the height you want. Solvent cement, pipe, and the trap arm are separate.

The 38531 uses quarter turn valves with standard levers, so the hose bibbs go from full open to full shut in a 90 degree throw instead of multiple turns of a compression stem. Property managers like that on laundry rooms because a tenant or tech can kill the water instantly, and there is no packing to weep the way an old multi-turn stem does. The box also has an easy-to-remove 1/4 turn knockout on the drain side.

The 38531 is the standard valve configuration. Quadtro valves are offered in no-hammer and standard hammer options, so if you need built-in arrestors for a high-pressure building or a run with long straight supply legs, specify the no-hammer version rather than this model number.

The box is molded from high impact polystyrene in white, which resists cracking during rough-in when a stud gets hammered or a bracket is over-driven. Whole assembly weighs 2.4 pounds, so it is a one-hand set for the installer.