For a bathtub drain, the IRC requires an access opening at least 12 inches in its smallest dimension, so a 14 × 14-inch panel like the Acudor ED-2002 is the usual pick. For a whirlpool pump, plan on 18 × 18 inches or more unless the maker says otherwise; the 24 × 24 Acudor covers it. Small 6 × 9 panels are only for single valves.
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This guide covers wall and ceiling access panels for plumbing in homes.
Access panels compared
| Panel | Size | Choose it when |
|---|---|---|
| Acudor ED-2002 14 × 14 | 14 × 14 in., steel | Tub drain or shower valve access behind a wall |
| Acudor ED-2002 24 × 24 | 24 × 24 in., steel | Whirlpool pump access or a crowded valve wall where you need room to work |
| Oatey 34056 | 14 × 14 in., plastic | A lighter plastic door for a closet or utility wall |
| Oatey 34055 | 6 × 9 in., plastic | Small access to a shutoff valve; too small for slip-joint drain access |
Pick the size from the job, not the hole you wish you had to cut. The code sets minimums for drain and whirlpool access, covered next.
What size the code requires
The 2024 IRC, Section P2704.1 (codes-conv.iccsafe.org), says slip-joint connections in tubular waste piping must be accessible, with an opening not less than 12 inches in its smallest dimension. That covers the slip joints on a bathtub waste and overflow, which is why tubs are usually backed by an access panel.
For whirlpool tubs, IRC P2720.1 says to follow the pump maker’s instructions; where they do not give a size, the opening must be at least 12 × 12 inches, or 18 × 18 inches if the pump is more than 2 feet from the opening. The opening must be unobstructed and big enough to remove and replace the pump.
A 6 × 9-inch panel meets neither rule. Use it only for small things like a single shutoff valve, and check with your inspector.
Acudor ED-2002 14 × 14: steel flush door
Choose the Acudor ED-2002 14 × 14 for most tub and shower access. Acudor’s product data (buildsite.com) lists 18-gauge steel door and frame, a door flush to the frame with reinforced edges, a 1-inch outside flange, a concealed hinge pin, a stainless slotted screwdriver cam latch and a white prime coat. It is made for drywall, plaster, masonry, tile or any flush surface.
Acudor says the wall opening is the nominal width plus 3/8 inch, so cut about 14-3/8 inches square. A 14-inch nominal door is above the 12-inch minimum; confirm the clear opening on the submittal if your inspector asks.
On October 15, 2026, the standard new offer from a third-party seller showed stock with model ED-2002 14 × 14.
Check Acudor ED-2002 14×14 access door on Amazon →
Acudor ED-2002 24 × 24: room for a whirlpool pump
Choose the Acudor ED-2002 24 × 24 for a whirlpool or jetted tub pump, or a wall with several valves. Acudor lists the 24 × 24 in the same ED-2002 line, so the same steel build and screwdriver latch apply; at that size the opening clears the 18 × 18-inch rule for a pump more than 2 feet away.
Cut the opening at about 24-3/8 inches square, per Acudor’s nominal-plus-3/8-inch rule, and frame the sides so the flange has solid backing.
On October 15, 2026, the standard new offer from a third-party seller showed stock with model ED2424SCPC.
Check Acudor ED-2002 24×24 access door on Amazon →
Oatey 34056: 14 × 14 plastic panel
Choose the Oatey 34056 if you want a lighter plastic panel for a closet wall behind a tub. The listing gives a 14 × 14-inch size in white.
Plastic panels are easier to cut around and will not rust in a damp spot, but they flex more than steel. Check that the actual clear opening of the panel you receive is at least 12 inches before installing it for drain access.
On October 15, 2026, the standard new offer from a third-party seller showed stock with part 34056.
Check Oatey 34056 14×14 access panel on Amazon →
Oatey 34055: 6 × 9 for a single valve
Choose the Oatey 34055 only for small access, such as a shutoff valve or a stub-out you need to reach. The listing gives 6 × 9 inches in white plastic.
It is too small for slip-joint drain access under IRC P2704.1, so do not use it behind a tub drain.
On October 15, 2026, the standard new offer sold by Amazon.com showed limited stock with model 34055.
Check Oatey 34055 6×9 access panel on Amazon →
Where plumbing access panels usually go
Behind a bathtub drain is the most common spot: the panel goes on the wall behind the drain end of the tub, often inside a closet or the next room, so the slip joints on the waste and overflow can be reached.
Behind a shower valve, a panel on the back side of the wall lets you replace a cartridge body or fix a leaking connection without tearing out tile. It does not replace the front trim access the valve already has.
For a whirlpool tub, the pump access is often in the tub apron or an adjacent wall. Follow the tub maker’s instructions for location.
Wall cleanouts and in-wall valves for ice makers or washing machines can also use a small panel. Size it so a hand and a wrench fit, not just a finger.
If the wall is fire-rated, such as the wall between a house and an attached garage, ask your inspector before cutting it. A standard access door may not keep the wall’s rating, and fire-rated access doors are sold for that purpose.
Installing an access panel
Mark the opening square, check behind the wall for pipe and wire, and cut slightly inside the line first. Most steel flush doors need the frame flange to sit on solid drywall or backing; add blocking at the sides if the opening falls between studs.
Fasten the frame per the maker’s instructions, finish the flange edge with joint compound, and paint the door to match the wall. Keep the latch reachable.
If you had to open a wall to make a repair, a panel can replace the patch. Our drywall patch kit guide covers the patch option, and our tub overflow gasket guide shows a common reason you will want access later.
Frequently asked questions
What size access panel do I need for a bathtub drain?
IRC P2704.1 requires an opening at least 12 inches in its smallest dimension for slip-joint access. A 14 × 14-inch panel is a common choice.
What size access panel for a whirlpool tub pump?
Follow the pump maker. If they give no size, IRC P2720.1 requires at least 12 × 12 inches, or 18 × 18 inches if the pump is more than 2 feet from the opening.
Is a 6 × 9 access panel big enough for plumbing?
Only for small items like a valve. It does not meet the 12-inch slip-joint access rule.
How big should the hole be for a 14 × 14 Acudor door?
Acudor says the wall opening is the nominal size plus 3/8 inch, so about 14-3/8 inches square.
Steel or plastic access panel?
Steel is stiffer and holds a latch well; plastic is lighter, easy to cut around and does not rust. Both work if the clear opening meets code.
How we chose
This document-based guide makes no hands-on testing claim. We read Sections P2704 and P2720 of the 2024 IRC and Acudor’s ED-2002 product data, and matched each Amazon listing to its model number. On October 15, 2026, all four linked standard new offers showed stock. Read our selection method and about Plumbing Picks.
Primary sources
- 2024 IRC Chapter 27, Sections P2704 and P2720 (codes-conv.iccsafe.org): slip-joint access 12 in. minimum; whirlpool pump access 12 x 12 or 18 x 18. Model code; local adoption varies.
- Acudor ED-2002 product data (buildsite.com): sizes, 18-gauge steel, flange, hinge, cam latch, wall opening W + 3/8 in.