6 Best 2-Gang Weatherproof Box | All the Room You Need

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The gray box with five 3/4-inch inlets and 56.46 cubic inches of interior volume.

The single biggest spec here is the capacity: 56.46 cubic inches versus the Sigma 14352’s 31 cubic inches, which means you can easily fit a GFCI outlet plus a switch and still have room to push the wires back without fighting the box. The die-cast aluminum body has a powder-coat finish (a baked-on paint layer) that buyers report feels “sturdy and well-made.” Five 3/4-inch threaded outlets give you options for multiple conduit runs or future additions.

At 2.68 inches deep versus the TayMac DB350Z at 2.2 inches deep, that extra depth makes a real difference when you are dealing with thicker cables or multiple pigtails. It is UL Listed (listing number E362604) and NEC compliant, so it passes inspection without issue. The included mounting lugs, closure plugs, and self-threading ground screws mean you do not need to hunt for small parts at the hardware store.

One trade-off: the box ships in gray only, so if you need a bronze or white finish for aesthetic reasons, you will need to look at the TayMac options below. Also, a few buyers wish it had more than five screw holes for mounting, though most find the included pair sufficient.

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A bronze-finished compact box that blends with dark siding and trim.

You get a bronze powder-coat finish that blends into patios and darker exterior walls — owners mention it looks great. The smooth die-cast aluminum body and NEMA-compliant (National Electrical Manufacturers Association standard) internal hub threads accept standard threaded fittings and conduit. It includes closure plugs, mounting hardware, and a ground screw.

The three 3/4-inch outlets handle a single in-and-out conduit run to a duplex receptacle (two outlets in one unit). At 12.64 ounces, it feels solid but not heavy. One buyer who used it for a patio outlet said it works “very well, especially with the matching cover.” The compact style means less material sticks out from the wall, so it fits tight spots.

The main limitation is that TayMac does not publish the cubic-inch capacity in the specs, so you will have to judge fit by depth and width. It is a standard shallow box, so cramming a GFCI plus extra wires can be snug.

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A straightforward gray box with solid UL and CSA listings at a very fair price.

The Sigma 14352 fits a standard outdoor receptacle or switch. Its 31 cubic inches of interior space are enough for two devices with 14-gauge wire (thinner wire for lights and outlets), and the die-cast aluminum with powder coating resists rust. It includes a pre-installed ground screw, closure plugs, mounting lugs, and two self-tapping screws. It is UL and CSA listed (safety certified), suitable for wet locations, and NEMA 3R rated — that means it handles rain and sleet but is not meant to be submerged.

Customers note it is a “high quality aluminum box good seal tight fit on plugs,” and several noted the same box costs more at local home improvement stores. At 4.5 x 4.5 x 2.26 inches, it is slightly smaller overall than the Sealproof model above, but the smaller footprint makes it easier to mount between studs in a tight wall cavity.

The knockouts are three 3/4-inch holes, which is typical for a basic install. One reviewer noted that the two included mounting brackets work fine, but four would feel more secure for a heavy cover — a detail note if you plan to use a large in-use cover.

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The box with five 1-inch outlets that accepts large conduit for EV chargers and heavy cable.

When you need to run 6/3 wire for a NEMA 14-50 EV charging outlet, standard 3/4-inch knockouts are too small. The TayMac DD5100XS solves that with five 1-inch threaded outlets that accept bigger conduit and fittings. One reviewer who used it for an EV-rated NEMA 14-50 setup called it the “correct box,” noting that 1-inch openings are hard to find in big-box stores. The box is built from metal with a powder-coat finish and includes a gasket, mounting hardware, and a pre-installed ground screw.

The industrial-style design includes detachable lugs for eight mounting options, giving you flexibility on where you anchor it. The 4.5 x 4.5-inch front face matches standard 2-gang wall plates. Buyers also mention using it for splicing heavy 2-gauge wire down to 6-gauge wire for a motorhome hookup, which shows the box has enough interior space for chunky connections.

One thing to note: the price is higher than the smaller-outlet models, and the 1-inch openings may be overkill for standard 15-amp outdoor outlets. But if you are feeding a 50-amp circuit, this is the box designed for exactly that.

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A bronze deep box that survived Florida rainstorms with Christmas lights plugged in.

This TayMac DB350Z is the bronze sibling with 1/2-inch threaded outlets instead of 3/4-inch. The smaller outlets keep the box compact — 2.2 inches deep by 4.63 inches wide by 4.56 inches tall — so it suits lighter-duty outdoor wiring like landscape lighting or a single receptacle for holiday decorations. One buyer mentioned it “survived FL rainstorms with Christmas lights plugged in without power loss,” which points to the weather seal and die-cast build quality.

The powder-coated bronze finish is very dark, almost black-brown, as several reviews noted. That is good news if you want it to disappear against dark siding or a bronze light fixture. It includes closure plugs, mounting hardware, and a ground screw. The internal hub threads are NEMA-compliant, so standard 1/2-inch fittings thread in cleanly.

The main limitation is the 1/2-inch outlets. Most standard outdoor receptacles use 3/4-inch conduit or connectors, so you will need a reducer or a different approach if you plan to use a typical in-use weatherproof cover with a 3/4-inch hub. Check your local hardware store for a 1/2-inch to 3/4-inch adapter if needed.

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A white box that is hard to find in stores but easy to install on a bright patio.

If your house has white trim or siding, a gray box stands out. The TayMac DB375WH solves that with a white powder-coat finish that blends into lighter backgrounds. One buyer who mounted it on a patio said he “could not find this box in any of the big box stores due to the color being white” — so this is a niche pick that fills a real gap. The box has three 3/4-inch threaded outlets, a smooth die-cast body, and includes closure plugs and mounting hardware.

Reviewers describe the casting as “good thickness” and the paint finish as “even and smooth,” which helps it hold up outdoors. The closure plugs cover unused ports, and the box keeps rain out effectively when paired with a standard weatherproof cover. It weighs 0.7 pounds, so it is a touch lighter than some rivals, but the build quality feels solid.

The limitation is the same as other compact TayMac models: no published cubic-inch capacity. That means you should stick to simple wiring — one duplex receptacle with thin wire — and avoid packing it with multiple devices or thick cable.