For mounting a light fixture where a ceiling beam provides the attachment point, choose a new-work electrical box designed to fasten to framing. The Maxxima 10-pack suits projects with several locations, while the XGGYA three-pack offers a smaller batch. The single-box XGGYA option is suited to one fixture, and the 50-pack is intended for larger installations. These products are electrical boxes, not decorative box beams; the beam clamp is a separate option for a compatible I-beam.
| Product | Best For | Key Detail |
|---|---|---|
| Maxxima 10-Pack | Multiple fixture locations | 20.3 cu. in.; six knockouts |
| XGGYA Three-Pack | Small projects | 20 cu. in.; listed for fixtures up to 50 lb |
| XGGYA Single Box | One fixture location | Grounding connection; nails included |
| mw 50-Pack | Large installations | 20 cu. in.; stated ETL and UL listings |
| BeneLabel I-Beam Hanger | Hanging a punching bag from an I-beam | Adjustable beam-width range |
Maxxima 20.3-Cubic-Inch Ceiling Box, 10-Pack

Best for: A renovation or new-construction project that needs several ceiling fixture boxes. Each nonmetallic PVC box has a 20.3-cubic-inch capacity and is specified for light fixtures up to 50 pounds.
The box measures 4.4 inches in diameter and 2.7 inches deep. Its three-inch captive nails are designed for mounting to fixed framing such as beams. Six knockouts and a ground lug screw are included, according to the product details.
Limitation: This is a 10-pack, so it may be more than needed for a single light. Confirm dimensions and fixture requirements before installation.
XGGYA New-Work Ceiling Box, Three-Pack

Best for: Homeowners or contractors who need a few new-work locations rather than a bulk quantity. The round PVC box is four inches in diameter, 2.25 inches deep, and has a 20-cubic-inch capacity.
The listing states that it is rated for fixtures up to 50 pounds and includes captive nails, a grounding lug, and a screw. Those details make it a useful comparison for projects attaching boxes to accessible framing.
Limitation: The product is a three-pack, and the listing describes a new-work installation. It is not presented as a decorative beam or a retrofit box for an already finished ceiling.
XGGYA Single-Gang Round Ceiling Box

Best for: A project requiring one round box for a ceiling light. The listing specifies a four-inch diameter, a grounding plate and screw, and nails for new-work attachment.
The product is described for ceiling lamps in new residential or commercial buildings and for different ceiling materials and structures. It is also listed as rated for fixtures up to 50 pounds. Choose this if a single box is sufficient and the listed dimensions suit the installation.
Limitation: The provided details do not state the box’s cubic-inch capacity or depth. Check those measurements and local electrical requirements before selecting it.
mw 20-Cubic-Inch Ceiling Boxes, 50-Pack

Best for: A large residential or light-commercial project with many new-work fixture locations. The listing gives a 20-cubic-inch capacity and says the boxes are ETL listed to UL514C and UL263, with a two-hour fire rating.
The round nail-on boxes are described as mounting to fixed points such as vertical beams. The product details also identify PVC construction and state that the boxes are intended to resist heat, water, and dust.
Limitation: A 50-pack is a substantial quantity and may not suit a small project. Verify that the listed ratings and the product’s installation instructions meet project requirements.
BeneLabel Adjustable I-Beam Hanger

Best for: Someone seeking a beam-mounted punching-bag hanger, not an electrical box or a decorative ceiling beam. The listing says it fits beams 3.7 to 6.7 inches wide and up to 0.7 inches thick, and describes a double-bolt and metal-plate fixing design.
The product is intended for boxing and other contact-sport workouts. Its stated capacity varies within the listing: the name says 880 pounds, while a feature says up to 900 pounds. Follow the manufacturer’s instructions and verify the applicable rating before use.
Limitation: This is not a lighting support or electrical product. Avoid it if the goal is to install a ceiling fixture or create a decorative box-beam appearance.
Buying Guide
Do you mean an electrical box or a decorative box beam?
An electrical box houses wiring and provides a mounting point for a compatible fixture. A decorative box beam is an architectural feature that covers or accents ceiling framing. The products above are mostly electrical boxes; they do not create a finished decorative beam. If the goal is a beam-style ceiling, look for materials and instructions specifically intended for decorative beam construction.
How many boxes does the project need?
Choose a single box for one location, a small multi-pack for a few fixtures, or a bulk pack for a larger installation. Compare the package count to the project plan to avoid buying substantially more boxes than needed.
What should you check before mounting on a beam?
Confirm the box is designed for new-work installation and that its nails or fasteners suit the accessible framing. Check the box dimensions, wiring capacity, fixture weight rating, and grounding details. Do not treat a stated fixture rating as proof that any beam or fastener can support the load.
Do listing marks and ratings matter?
Review the product’s stated listing, capacity, and installation instructions, and follow local electrical codes. When the product details do not provide a dimension or rating you need, verify it with the manufacturer rather than assuming it matches another model.
Frequently Asked Questions
Can these electrical boxes create a box-beam ceiling?
No. They are electrical boxes for wiring and fixture installation. They are not decorative beam components.
Which option is best for several ceiling fixtures?
The Maxxima 10-pack is suited to a project with multiple locations. The 50-pack is a better quantity match for a much larger installation.
Are these products intended for new construction?
The listings describe them as new-work or new-construction boxes. Check the instructions before using one in an existing finished ceiling.
Can the I-beam hanger hold a ceiling light?
The BeneLabel hanger is described for suspending a punching bag from a compatible I-beam. It is not listed as a ceiling-light support.
What does a 50-pound fixture rating mean?
Some listings state a 50-pound fixture rating for the box. The supporting beam, fasteners, installation, and applicable code requirements must also be suitable for the specific fixture.