What Is a 4 Outlet Box Called? | 4 Gang vs 4 Outlet Box Explained

A “4 outlet box” is properly called a 4-gang electrical box or 4-gang outlet box — “gang” counts the device openings, not the number of plug sockets.

Ask for a “4 outlet box” at a counter and you may get the right part or the wrong one, because the trade uses two separate words for two separate things. A gang is a device position in the box; a receptacle is the device you plug into. A four-slot receptacle is a single device, while a 4-gang box is a housing built to hold four separate devices side by side. Mixing those up is the most common way people buy the wrong box.

What Does “4 Gang” Actually Mean?

Gang refers to how many adjacent device openings a box or wall plate provides. A 4-gang box has room for up to four devices in a row.

The term comes from the electrical trade and is standard in US catalogs. Suppliers including McMaster-Carr label this format as 4 gang, and the same size also shows up listed as a four gang box, a 4 gang outlet box, or a 4 gang electrical box. All four labels describe the same thing.

Here is the distinction that trips people up: a single receptacle can itself have four plug-in slots. That part is called a quad receptacle, and it is one device, not four. A quad receptacle can sit on its own plate or share a larger box with other devices, but the box and the device are separate purchases.

Is a 4 Gang Box the Same as 4 Outlets?

No. A 4-gang box does not automatically give you four working outlets. What you end up with depends on which devices you install and whether the box has the volume to support them.

Fit comes down to four things: the device type, the depth of the box, the plate you choose, and the volume allowance required by code. Four slim dimmers and four bulky GFCI receptacles are not the same load, even though both are single devices. Electrical boxes are sized to provide adequate volume and device clearance, and the National Electrical Code’s box-fill rules spell out what a given volume can hold. A box that ignores those limits can run out of room before the fourth device is wired.

What Is a 4 Gang Box Called in a Store?

Ask for a “4-gang outlet box” and most suppliers will know exactly what you mean. That is the label that turns up on shelf tags, order forms, and spec sheets across US catalogs.

If the clerk looks blank, try “four gang box” or “four gang electrical box.” These are the same product under a different name. What you want to avoid saying is “four outlet box” on its own — that phrasing sends people toward a quad receptacle, which is a device, not a housing.

Pricing on these boxes varies widely by material, mounting style, and whether the listing is steel, PVC, or drawn style. One McMaster-Carr listing for a 4-gang blue steel box with mounting brackets and UL listing appears in catalog searches, but current prices shift and are not worth quoting from memory. Check the live listing or your local counter for today’s number. For a full walkthrough of which boxes are worth buying, our tested roundup of the best 4 outlet boxes covers real options side by side.

The other word to keep separate is 4-square. A 4-square box is a box form and size family, not a device-position count. A 4-square box might hold one device or several, and it is never the same thing as a 4-gang box. Catalogs list both, and the sizes are genuinely different. McMaster-Carr’s own 4-gang listings show the format clearly for anyone comparing and selecting the right housing.

Which One Do You Actually Need?

Pick based on what you want at the wall, not on the phrase you typed into a search bar. If you want four separate devices, from dimmers to smart switches to receptacles, you want a 4-gang box and a matching 4-gang plate. If you want four plug sockets from one device, you want a quad receptacle, and it may fit into a single-gang or larger setup depending on the model.

• Four separate devices: 4-gang box, 4-gang plate, devices chosen for the available volume.
• Four plug sockets from one device: quad receptacle, sized to a standard plate or a larger multi-gang plate.
• Four devices on one gang plate: not a thing — plates match the gang count of the box behind them.
• Not sure which device will fit: check the box volume in cubic inches against the code allowance for your device type before buying.

Gang counts device positions. Receptacle counts sockets. Once you keep those two numbers apart, every catalog listing, wall plate, and box spec falls into place.