For a push-to-connect box with arresters, pick the SharkBite 25031. For copper, the Oatey Quadtro 38529. For F1807 PEX crimp with arresters, the Sioux Chief OxBox 696-2313XF. For CPVC, the Sioux Chief 696-G2303CR.
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This guide compares four washing machine outlet boxes using SharkBite, Oatey and Sioux Chief documents.
Washing machine outlet boxes compared (maker documents)
On a phone, swipe or scroll the table sideways to see every column.
| Model | Supply connection | Hammer arresters | Drain position |
|---|---|---|---|
| SharkBite 25031 | 1/2-in. push-to-connect | Yes | Left, right or center |
| Oatey Quadtro 38529 | Copper | No | Left, right or center |
| Sioux Chief OxBox 696-2313XF | F1807 PEX (crimp) | Yes | Separate drain box |
| Sioux Chief OxBox 696-G2303CR | CPVC | No | Separate drain box |
A washing machine outlet box is a recessed box in the wall that holds the hot and cold valves for the washer hoses and the standpipe for the drain hose. It replaces exposed hose bibs and a loose drain pipe with one neat opening. The main choice is how the box connects to your supply pipe: push-to-connect, copper, PEX or CPVC. For the hoses that connect to it, see our washing machine hose guide.
SharkBite 25031: push-to-connect with arresters
Choose the SharkBite 25031 if you want to connect without crimping, gluing or soldering. SharkBite’s product page (sharkbite.com) lists a one-piece recessed box with quarter-turn shut-offs and 3/4-inch washing machine hose outlets, 1/2-inch push-to-connect inlets compatible with PEX, copper, CPVC and PE-RT, and mounting brackets for the left, right or center of a stud bay without extra framing.
The 25031 includes water hammer arresters; SharkBite’s 24763 is the same box without them. The page lists left, right or center drain compatibility, a snap-on faceplate for drywall up to 3/4 inch, and removal with a disconnect clip or tongs sold separately. On October 15, 2026, the standard new offer sold by Amazon.com was in stock with model 25031. For more on SharkBite fittings, see our push-to-connect fittings guide.
Check SharkBite 25031 washing machine outlet box on Amazon →
Oatey Quadtro 38529: copper, any drain position
Choose the Oatey Quadtro 38529 for a copper supply and flexible drain placement. Oatey’s Quadtro product page (oatey.com) lists part 38529 as the 1/4-turn copper washing machine outlet box, display box. Oatey says the Quadtro is made for residential or commercial work where the valves and drain are recessed into the wall, that its lock-and-load valves allow left, right or center drain positioning, and that the box includes the support brackets to mount the supply from the top or bottom.
The Quadtro line comes in 27 variations, including PEX, CPVC, compression and hammer-arrester versions, so confirm the part number before you order. On October 15, 2026, the standard new offer sold by Amazon.com showed limited stock with model 38529.
Check Oatey Quadtro 38529 washing machine outlet box on Amazon →
Sioux Chief OxBox 696-2313XF: PEX crimp with arresters
Choose the OxBox 696-2313XF for an F1807 PEX crimp system with arresters and a frame. Sioux Chief’s 696 series spec sheet (cdn.siouxchief.com) decodes the model: 2313 means with arresters, X means F1807 PEX, and F means the standard pack with supply and drain boxes, frame, bracket and debris cover. The sheet lists plated quarter-turn valves with 3/4-inch male hose thread outlets; on arrester models the two handles can be turned together or separately.
It lists a separate supply box and drain box joined with a U-clip, mounting on or between studs with supply lines from top or bottom, a 2-inch Schedule 40 drain hub, an 18-inch bracket, an 11-1/2 by 7-1/4-inch frame and a 3-1/2-inch box depth. The leading dash in the model means standard brass valves rather than the G no-lead option. On October 15, 2026, the standard new offer sold by EverScale Partners showed limited stock with model 696-2313XF.
Check Sioux Chief OxBox 696-2313XF washing machine outlet box on Amazon →
Sioux Chief OxBox 696-G2303CR: CPVC rough-in pack
Choose the 696-G2303CR for a CPVC supply and a rough-in pack without arresters. On the same Sioux Chief sheet (cdn.siouxchief.com), G means no-lead brass valves, 2303 means no arresters, C means a male CPVC connection, and R means the rough-in pack: supply and drain box, bracket and debris cover, without the frame. The frame is sold separately as the 696-2F double-box frame.
It shares the series dimensions and the 2-inch drain hub. On October 15, 2026, the standard new offer sold by ZenSupplyInc showed limited stock with model 696-G2303CR. If you need arresters, see our water hammer arrester guide.
Check Sioux Chief OxBox 696-G2303CR washing machine outlet box on Amazon →
Match the box to your supply pipe
Pick the box that fits the pipe already in the wall. SharkBite’s push-to-connect inlets accept PEX, copper, CPVC and PE-RT. Oatey 38529 is the copper version of the Quadtro. The Sioux Chief sheet lists connection codes for CPVC, Everloc+, MIP, sweat or press, and three PEX standards: F3347, F1960 and F1807. F1807 is the crimp-ring system; see our PEX crimp tool guide. If your house uses expansion PEX (F1960), choose a box made for it.
Do you need water hammer arresters?
Washing machines close their valves quickly, which can cause a bang in the pipes called water hammer. SharkBite says its arrester version reduces noisy pipes. The SharkBite 25031 and Sioux Chief 696-2313XF include arresters; the Oatey 38529 and Sioux Chief 696-G2303CR do not. Choosing a box with arresters built in avoids adding separate arresters later.
Drain and installation
The drain hose goes into a standpipe below the box. Sioux Chief lists a 2-inch Schedule 40 hub on its drain box. SharkBite and Oatey list left, right or center drain positions, so you can place the box to suit the stud bay. Plan the height so the washer hoses reach the valves and the drain hose reaches the standpipe; see our washing machine drain hose guide. Installing a new box means opening the wall and connecting supply and drain lines, and local codes may require a permit.
Check these before you order
- Pipe type. Push-to-connect, copper, F1807 PEX or CPVC.
- Arresters. Included on SharkBite 25031 and Sioux Chief 2313.
- Frame. Sioux Chief R packs have no frame.
- Drain. 2-inch hub on Sioux Chief.
- Drywall. SharkBite faceplate fits up to 3/4 inch.
- Seller. Sioux Chief via third-party sellers with limited stock.
Which washing machine outlet box should you buy?
For the easiest connection to almost any pipe, with arresters, the SharkBite 25031. For copper supply and left, right or center drain, the Oatey Quadtro 38529. For F1807 PEX crimp with arresters and a frame, the Sioux Chief OxBox 696-2313XF. For CPVC without arresters, the Sioux Chief 696-G2303CR. For the refrigerator line, see our ice maker outlet box guide.
Frequently asked questions
What is a washing machine outlet box?
A recessed wall box that holds the washer’s hot and cold valves and the drain standpipe opening.
Which boxes include water hammer arresters?
The SharkBite 25031 and Sioux Chief 696-2313XF.
Which works with any pipe?
SharkBite lists PEX, copper, CPVC and PE-RT compatibility for its push-to-connect box.
What do Sioux Chief model letters mean?
On the 696 series, G is no-lead brass, 2313 adds arresters, the next letter is the connection type, and F or R is the pack.
What size are the valve outlets?
SharkBite and Sioux Chief list 3/4-inch hose thread outlets; Oatey’s Quadtro page does not list the outlet size, so check the package.
How we chose
This document-based guide makes no hands-on testing claim. We read SharkBite’s washing machine box product page, Oatey’s Quadtro product page and Sioux Chief’s 696 series spec sheet. On October 15, 2026, we checked each linked standard new Amazon offer for model, seller, stock and an add-to-cart button. Read our selection method and about Plumbing Picks.
Primary sources
- SharkBite washing machine box product page (sharkbite.com): 24763/25031.
- Oatey Quadtro product page (oatey.com): part 38529.
- Sioux Chief 696 series spec sheet (cdn.siouxchief.com): OxBox.