OATEY 38479 Fire Rated, 1/4 Tu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$391.43
$341.43
OATEY 38479 Fire Rated, 1/4 Turn, CPVC, Hammer - Washing Machine Outlet Box, Standard Pack

OATEY 38479 Fire Rated, 1/4 Turn, CPVC, Hammer - Washing Machine Outlet Box, Standard Pack

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Model: 38479
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$391.43
$341.43
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Fire Rated, 1/4 Turn, CPVC, Hammer - Washing Machine Outlet Box, Standard Pack

  • Features

    • Water Hammer arrestors help absorb the shock and reduce noise from fast open/close valves and ensure code compliance
    • Adjustable metal mounting brackets, easy to remove test cap
    • 2" drain opening fits PVC or ABS Sch. 40 DWV pipe
    • Box made of Bulk Molding Compound (BMC) with UL-classified intumescent pads and UL-classified insulating material
    • Warnock Hersey certified, for 1-hour and 2-hour fire-rated walls
    • Flexible valve/drain arrangement capabilities


38479 - spec sheet

Manufacturer Resources

Product Specs

Box Dimensions:
8-1/3"W x 5-1/2"H x 3-3/4"D
Faceplate Dimensions:
10-1/5"W x 7-2/5"H
Volume:
0.416
Department:
Plumbing
Product Group:
Plumbing Boxes
Product Subgroup:
Appliance Outlet Boxes
Product Type:
Washer Outlet Box
Product Finish:
White
Lever Type Details:
Standard
Product Weight:
4.9

OATEY 38479 – Frequently Asked Questions

1) Can the Oatey 38479 washing machine outlet box be installed in a 1-hour or 2-hour fire-rated wall?
Yes. The Oatey 38479 is Warnock Hersey certified for both 1-hour and 2-hour fire-rated wall assemblies. The box body is Bulk Molding Compound with UL-classified intumescent pads and UL-classified insulating material, which is what maintains the rating of the assembly once you cut the opening. That makes it the right choice for corridor walls and demising walls in multi-family and hospitality work where a standard plastic box would break the rating.
2) Do I need to add separate water hammer arrestors to a washer box, or does the Oatey 38479 include them?
Arrestors are built in. The 38479 has integral water hammer arrestors that absorb the shock and cut the banging noise from a washer's fast-closing solenoid valves, and they cover the code requirement for arrestors at quick-closing valves. No separate mini-rester to pipe in, which saves a pair of tees and fittings in the wall cavity.
3) What size opening do I need to frame for the Oatey 38479 washer box, and how much does the faceplate cover?
The box itself measures 8-1/3 x 5-1/2 x 3-3/4 inches (W x H x D), so it drops between studs on standard 16 inch centers and sits inside a 2x4 wall at that 3-3/4 inch depth. The faceplate is 10-1/5 x 7-2/5 inches, giving you roughly an inch of overlap on all sides to hide the drywall cut. Adjustable metal mounting brackets let you set the box depth to the finished wall surface.
4) Is the Oatey 38479 the right part number for a copper sweat washer box?
No. The 38479 is the CPVC version, so its supply inlets are made up with CPVC solvent cement. If your laundry supply lines are copper and you want to sweat directly to the box, this is the wrong configuration, you would want the copper sweat version of the fire-rated 1/4 turn hammer-arrestor box instead. Ordering by model number matters here because the box bodies look identical.
5) Are the valves on the Oatey 38479 quarter turn or multi-turn?
Quarter turn, with standard levers. Tenants can shut both supplies off in one motion, and quarter turn ball-type valves do not develop the weeping stem packing that multi-turn compression stops do. For a property manager standardizing laundry closets across a building, this is the version that generates fewer service calls.
6) Can the valve and drain positions be changed on the Oatey 38479 washer box?
Yes. The 38479 offers flexible valve and drain arrangement capability, so you can work around a stud, a vent takeoff, or an existing drain stub rather than re-framing. Useful on retrofit work where the old box left the drain off center.
7) Can I pressure test the rough-in with the Oatey 38479 box installed?
Yes. The box comes with an easy-to-remove test cap, so you can cap the drain for the rough-in test and pull it when you set the finish plate. No cutting or re-piping to clear the opening afterward.
8) What finish is the Oatey 38479 washer box, and how heavy is it?
White, which is the standard match for laundry closet and utility room walls with no painting needed. Shipping weight is 4.9 pounds, light enough to hang on the bracket single-handed while you set your screws.
How fast can I get the OATEY 38479 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the OATEY 38479 come with a warranty?
Absolutely. The OATEY 38479 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the OATEY 38479?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the OATEY 38479 from ZenSupply?
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