Check it out! New Mainline Faucet Collections!

MultiBox Two-Box Washing Machine Outlet Box System with Qtr Turn Valve 1/2″ (WIRSBO, Fire rated)

Model #: ML83059
  • Made of High Temperature Resin
  • Intumescent Pad Attached to Back of Outlet Box
  • Mounting flanges-no clips to lose or hassle with
  • Top and Bottom stabilizer bar slots
  • Nail slots
  • Nine valve knock-outs
  • Two drain knock-outs:2″ standard washing machine drain, optional 1″ to pipe valve box to DWV system
  • Integrated drain knock outs will not fall down the drain after DWV test
  • •Anti-rotational valve design
  • •All faceplates fit up to two sheets of 5/8″ drywall


Spec Sheet
Installation Instructions/Parts/Warranty

Additional information

Product Category

Fire Rated Outlet Boxes

Product Type

Washing Machine Boxes