Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Buying a 2-hour fire-rated electrical box means choosing a metal or PVC housing that keeps flames and heat from spreading through a wall cavity for a full 120 minutes. That rating is the whole point—it buys precious time for anyone in the building to get out safely.
I’m Mohammad Maruf — the founder and writer behind KitchPrep. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you are roughing in new walls or retrofitting an existing room, these eight options cover the most dependable 2-hour fire-rated electrical box choices sorted by what each one does best.
Our Picks at a Glance
How To Choose The Best 2-Hour Fire-Rated Electrical Box
Every box here shares one non-negotiable trait: a tested 2-hour fire rating (meaning it contains flames for two hours in a standard fire test). Your actual decision depends on the box’s job, its size, and whether you are building new or fixing up old.
Match the box to the job: new work vs. old work
New-work boxes have nails or screws that attach to open studs before drywall goes up. Old-work boxes slide into a hole cut in existing drywall and grip the edges, which makes them the smart pick for remodeling and adding outlets to finished rooms.
Understand the real meaning of cubic-inch capacity
The capacity—measured in cubic inches—sets a legal limit on how many wires can sit inside. A 32.5 cu. in. box holds far more conductors than a 14 cu. in. one. Under-filling is always fine; over-filling violates code.
Choose your material: steel strength vs. PVC ease
Welded steel boxes offer a rugged, non-combustible shell and often double as the grounding path. PVC boxes are lighter, non-conductive, and can still meet the same 2-hour rating, but you must handle grounding inside the box separately.
Quick Comparison
| Model | Best For | Capacity | Box Type | Pack Size | Amazon |
|---|---|---|---|---|---|
| RACO 232★ Best Overall | Metal new work | 30.3 cu. in. | 4 in. Square | 25 | Amazon |
| AIRTAK SN20XCGRound Fit | Round ceiling new work | 20 cu. in. | 1-Gang Round | 6 | Amazon |
| Maxxima MEW-J1050RFixture Friendly | Ceiling fixtures | 20.3 cu. in. | 1-Gang Round | 10 | Amazon |
| Maxxima MEW-J2000 | Switches and outlets | 32.5 cu. in. | 2-Gang | 10 | Amazon |
| CycevSun AG120 | 1-gang new work | 22 cu. in. | 1-Gang | 12 | Amazon |
| MAKERELE MK-SN18RCG | Ceiling fans and lights | 18 cu. in. | 1-Gang Round Old Work | 12 | Amazon |
| Wocloer 14 cu-in | Retrofit walls | 14 cu. in. | 1-Gang Old Work | 24 | Amazon |
| HUIXHAO SN32X | Double gang new work | 32 cu. in. | 2-Gang | 12 | Amazon |
In-Depth Reviews
1. RACO 4 in. Square Electrical Box, Welded, 25-Pack
Our pick — over 4.5★ from 950+ verified ratings; the strongest balance of quality and price.
The welded steel workhorse that pros restock without a second thought.
Roughing in a whole house demands a box you do not have to think about, and this RACO 4-inch square delivers exactly that. The welded steel body resists distortion when you reef on a device screw, and its 30.3 cu. in. capacity gives you room to land multiple cables without wrestling them into a tight space.
Contractors clearly lean on this one—buyers report it is “a great product at a fair price,” noting it undercuts big-box store pricing while arriving at the door. The combination screw heads speed up installation whether you grab a Phillips or a flathead, and the powder-coated finish shrugs off scrapes. You get 25 boxes in the pack, which is why it is rated as a 4.2x value gap compared to a 6-pack round PVC box; the sheer per-unit cost makes it the budget king despite the premium feel.
The 2-hour fire rating is the headline, but the steel itself is the real firefighter—it is UL Listed and acceptable in 2-hour fire rated walls, and it handles circuits up to 600V without a bonding jumper. At 14.08 ounces per box, it is a 3.7x heavier unit than a lighter PVC box, which tells you how much material you are getting. The most repeated caution is about the top edges being sharp during handling, so gloves are a smart move until the box is covered.
Why pros stock it
- Welded steel shell shrugs off installation abuse
- Works with Hubbell 9450a EV 240V charging outlets
- Combo screw heads speed up every fastening step
What to watch
- Sharp top edges can cut bare hands during install
- Steel is heavy—14.08 oz per box adds up over 25 units
The pick for: electricians and serious DIYers roughing in many wall or ceiling boxes who want rugged steel and a deep 2-1/8 in. body.
The trade-off: wear work gloves—the machined edges are sharp until the box is buried in the wall.
2. AIRTAK 1-Gang 20 Cu. In. Round New Work Box, 6-Pack
A round nail-on box that chews through ceiling and wall rough-ins fast.
If you are wiring a new room and need round boxes for lights or single devices, this AIRTAK 6-pack hits the practical balance. The non-conductive PVC body means you do not have to worry about accidental contact with live parts, and the 20 cu. in. capacity handles a standard device circuit comfortably. Nail-on installation with secure fixing nails gets the box locked to the stud in seconds, and the built-in grounding lug keeps your bond point ready.
The ETL certification covers the 2-hour fire protection rating, which is the exact safety credential you need for code compliance in rated assemblies. Owners mention using it to add a “20 amp circuit where a 15 amp circuit used to be”—housing capped-off wires in a junction rather than gutting an existing run. The material is impact-resistant thermoplastic, so it will not corrode or rust like a steel box might in a damp area.
This is a budget-tier entry point, and the honest notes say the quality is good but not premium—it does the job without frills. The 4″D x 4″W x 4″H dimensions make it a chunky unit, but that translates into easy wire handling. If you need a round box for a simple ceiling light over a stairwell, this gets it done at a price that makes the 6-pack an easy throw-in on a bigger order.
Budget brainer: the cheapest way to get an ETL-listed 2-hour round box, ideal for new ceilings.
Reality check: buyers call it “not the best quality” but a “good deal”—perfect for straightforward installs.
3. Maxxima 20.3 Cu. In. New Work PVC Ceiling Box, 10-Pack
A ceiling box rated to hold a 50lb light fixture while keeping fire at bay for two hours.
Hanging a heavy light fixture usually means hunting for a stud or adding blocking, but this Maxxima ceiling box removes that headache. Its 20.3 cu. in. capacity is specifically suitable for light fixtures up to 50 lbs, so you can mount a substantial chandelier or ceiling fan-rated light without breaking a sweat. The 4.4″ diameter x 2.7″ deep body gives you a real work area, and the 103mm cutout is a standard size for ceiling work.
Installation is the crowd favorite here—the box mounts on fixed points like beams, and the 3″ captive nails mean you hammer it straight into the stud without fumbling for loose hardware. Customers note “the box capacity allows ample room for wire and connectors,” which is the exact thing that makes a ceiling box pleasant versus frustrating. The 6 knockouts and ground lug screw give you flexibility for bringing cable in from any direction.
The reliability credentials are stacked: it meets UL514C and UL263 standards with a 2-hour fire rating, plus ANSI/NEMA OS 2-2013 compliance, and it is ETL Listed. Maxxima backs it for a year. Compared to the AIRTAK above, this 10-pack costs a bit more per box but adds the 50lb fixture rating that the basic round box lacks—so it is the better choice where a heavy light is going.
Fixture-grade: holds up to 50 lbs of light fixture while other round boxes tap out at a basic bulb.
Pro choice: contractors grab the 10-pack for whole-home ceiling rough-ins.
4. Maxxima 2 Gang 32.5 Cu. In. PVC Junction Box, 10-Pack
The double-gang box with 62% more wire room than a standard single.
Side-by-side switches or a dimmer plus a GFCI needs a box that does not cramp your work, and this Maxxima 2-gang delivers with a 32.5 cu. in. capacity. That is a full 62% more internal space than a standard 20 cu. in. single-gang box, so you can land multiple cables and still close the device up without fighting. The 4.1″ W x 6.1″ L x 3.1″ D footprint is built for vertical beam mounting, and 8 knockouts give you entry points from nearly any angle.
Owners consistently call the quality “sturdy” and note the 3″ captive nails are the right length—you hammer them into the stud and the box sits flush without shifting. The positioning tabs help you line it up on the stud face before you commit. The punch-out knockouts are easy to remove with a screwdriver, though they are not the push-in style that grips the wire automatically, so you will use your own cable clamps or staples.
This box clears the same rigorous benchmarks as its single-gang sibling: UL514C and UL263 compliance, a 2-hour fire rating, and ETL Listing. The honest installation note is that standard receptacle-holding screws may not thread perfectly into every hole—a minor fit gripe that does not stop the box from working. For a kitchen island with two device locations or a workshop wall of switches, this 10-pack is the efficient buy.
Better than big-box: reviewers point out it matches or beats store-brand quality at a keener delivered price.
Minor snag: some device screws feel tight threading into the PVC—back them out gently.
5. CycevSun 12-Pack 1 Gang Electrical Outlet Box, 22 Cu In
The value pick that hides a 22 cu. in. canyon behind a basic 1-gang face.
If you are wiring a shop, garage, or a rental flip and need boxes by the dozen, this CycevSun pack stretches your dollar further than most. The 22 cu. in. capacity is roomier than the bare-minimum 18 cu. in. boxes, which makes landing a GFCI or a dimmer noticeably easier. The high-strength PVC is rust-proof and corrosion-resistant, so it will never develop the flaky mess a steel box can in a damp basement.
The cULus Listing is the meaningful safety credential here—it certifies the 2-hour fire rating that keeps this box legal in fire-rated wall assemblies. Shoppers say the boxes feel “more sturdy than they look,” which is the pleasant surprise of dense PVC over flimsy plastic. The included mounting screws mean you do not make a second trip to the hardware store, and the screw-in installation is straightforward on open studs.
The thing buyers love most is the pinch clamps—the built-in cable grips that big-box stores are “doing away with.” That means you push the wire in, it holds tight, and you skip buying separate connectors. The main limitation is that this is a screw-in new-work box, so it is not the pick for remodeling a finished wall. For fresh construction where you need reliable boxes fast, the 12-pack is a low-friction answer.
What wins people over
- Pinch clamps grip cable—no extra connectors needed
- 22 cu. in. capacity fits GFCIs and dimmers with ease
- Rust-proof PVC survives damp locations
Before you buy
- New-work screw-in type is not for finished walls
- Basic gray finish—no frills, just function
Reach for it if: you are wiring fresh open walls and want screw-in convenience with real 22 cu. in. working space.
Look elsewhere if: your project is a retrofit where you need old-work mounting tabs.
6. MAKERELE Old Work 1 Gang Round Outlet Box, 18 Cu. In., 12-Pack
The retrofit round box built for ceiling fans when there is no stud to catch.
Adding a ceiling light or fan to a finished room usually means cutting a hole and hoping you hit wood, but this MAKERELE old-work box is made for exactly that moment. The 4.25 inch diameter body fits a standard ceiling cutout, and the adjustable mounting system grips the drywall securely without needing a stud behind it. Its 18 cu. in. capacity and 2-3/4 inch depth give enough swallow for the wires feeding a fan or light.
This box is engineered for remodeling. A built-in wire clamp and fixing screws let you secure the cable inside the box, and the ETL certification backs the 2-hour fire-rated design that keeps it code-compliant in rated ceilings. Buyers report it is great for “jobs without nearby studs,” which is the exact headache an old-work box solves—you are not fishing for framing, you are clipping into the drywall itself.
The PVC construction is sturdier than it looks, delivering “exceptional sturdiness” for both residential and commercial spaces. Compared to the new-work round boxes above, this one trades the hammer-and-nail speed for the flexibility of retrofitting anywhere. The packaging lists 12 in the pack, but note the product data says “Number of Items: 1” in some listings—check your box count on arrival. For lighting upgrades in bedrooms, kitchens, or basements, this is the retrofit specialist.
Stud-free hero: clamps into drywall wherever you cut the hole—no framing required.
Best for: ceiling fans and light upgrades in finished rooms.
7. Wocloer 1 Gang Old Work Electrical Box, 14 Cu-In, 24-Pack
The 24-pack retrofit box that wins on sheer ease of old-work installation.
Retrofitting a whole floor of outlets gets tedious fast, and this Wocloer old-work box is designed to make every single one quicker. The 2-3/4″ deep body with 14 cu. in. capacity provides wiring room for 7×14 AWG, 6×12 AWG, or 5×10 AWG configurations, so you have clear guidance on what fits. The built-in cable clamps grip NM-B cable without needing extra connectors—one less part to buy and one less step to fumble.
The installation is the defining feature here: cut the opening, insert the box, and the adjustable mounting tabs grip the drywall. No brackets, no screws, no tools—the live hinges allow easy cable insertion and add strain relief. This is a genuinely tool-free process, which is why owners mention these are “easier to use than similar boxes sold at Lowes and HD.” The UL Listing certifies the full 2-hour fire rating.
The grey PVC finish blends cleanly with drywall and concrete, and the non-conductive body means no grounding loop to worry about—a real time-saver. The knockouts can be “a little tough to break,” but that is a minor stiffness, not a flaw. At 24 units per pack, this is the quantity you need for a whole-home remodel, and it earns its “better quality than the big-box offerings” reputation from owners who handle both side by side.
The fast-install edge
- Tool-free tabs grip drywall with no screws or brackets
- UL Listed with a full 2-hour fire rating
- Cable clamps mean no extra NM-B connectors
Worth knowing
- 14 cu. in. is snug for very complex multi-cable runs
- Knockouts need a firm push to break out cleanly
Best for: remodelers and electricians adding many outlets to finished walls in one sweep—the 24-count covers a house.
Think twice if: you need to pack more than a handful of conductors into a single-gang space.
8. HUIXHAO 32 Cu In PVC Double Gang New Work Box, 12-Pack
A double-gang nail-on box that makes multi-switch rough-ins beginner-proof.
Wiring a wall with two or three switches usually means fiddling with alignment, but this HUIXHAO 2-gang box handles that with pre-installed nails and mounting guides. The 32 cu. in. capacity per unit accommodates standard electrical equipment and switches, and the 3-1/4-Inch (L) x 3-2/3-Inch (W) x 3-Inch (D) box weighs a manageable 139 grams per unit. Owners call the mounting guides a real help for lining up the box flush on the stud before you hammer.
The material is where this box earns its keep: impact-resistant thermoplastic and non-conductive PVC, ETL listed to UL 514C for electrical safety and UL 263 for fire resistance. The 2-hour fire protection rating is explicitly stated, making it a solid choice for large-scale residential and light commercial projects. It is built for non-metallic sheathed cables, which covers the vast majority of modern residential wiring.
Because the nails come pre-installed, even a first-timer can nail the box to a stud and get a firm, square mount without a level battle. Buyers simply note the boxes “worked perfect” and perform “as expected”—the unglamorous endorsement of hardware that just does its job. Compared to the Maxxima 2-gang above at 32.5 cu. in., this one lands at 32 cu. in. with a larger 12-pack, so the per-box cost is keener for big jobs.
Beginner-friendly: pre-installed nails and mounting guides mean a square mount on the first try.
Scale pick: 12 boxes of double-gang capacity for multi-point wiring projects.
9. HUIXHAO 32 Cu In PVC Double Gang New Work Box, 12-Pack
A double-gang nail-on box that makes multi-switch rough-ins beginner-proof.
Wiring a wall with two or three switches usually means fiddling with alignment, but this HUIXHAO 2-gang box handles that with pre-installed nails and mounting guides. The 32 cu. in. capacity per unit accommodates standard electrical equipment and switches, and the 3-1/4-Inch (L) x 3-2/3-Inch (W) x 3-Inch (D) box weighs a manageable 139 grams per unit. Owners call the mounting guides a real help for lining up the box flush on the stud before you hammer.
The material is where this box earns its keep: impact-resistant thermoplastic and non-conductive PVC, ETL listed to UL 514C for electrical safety and UL 263 for fire resistance. The 2-hour fire protection rating is explicitly stated, making it a solid choice for large-scale residential and light commercial projects. It is built for non-metallic sheathed cables, which covers the vast majority of modern residential wiring.
Because the nails come pre-installed, even a first-timer can nail the box to a stud and get a firm, square mount without a level battle. Buyers simply note the boxes “worked perfect” and perform “as expected”—the unglamorous endorsement of hardware that just does its job. Compared to the Maxxima 2-gang above at 32.5 cu. in., this one lands at 32 cu. in. with a larger 12-pack, so the per-box cost is keener for big jobs.
Beginner-friendly: pre-installed nails and mounting guides mean a square mount on the first try.
Scale pick: 12 boxes of double-gang capacity for multi-point wiring projects.
