Southwire 3-Gang Electrical Box (MSB3G)

  • Supports up to 42 lbs for fixtures.
  • Designed for three-gang electrical configurations.
  • Adjustable depth for versatile installations.
  • Constructed with extra thick PVC material.
  • Mounts securely to wood or metal studs.
  • UL Listed for safety and reliability.
  • Part of the trusted Southwire family.

Best Alternatives and Similar Products for Southwire 3-Gang Electrical Box (MSB3G)

The best Electrical Outlet Boxes includes Safety Innovations Twin Door Outlet Cover (1-Pack), Sigma Engineered Solutions Weatherproof Outlet Box, Carlon [B114R-UPC] 1-Gang Outlet Box and many others as mentioned below.

1

Safety Innovations Twin Door Outlet Cover (1-Pack)

Best Product
  • Double locking system for enhanced safety.
  • Extra large interior space for bulky plugs.
  • Easy installation with included screws and faceplates.
  • Keeps electrical plugs out of baby's reach.
  • Ideal for various rooms in the home.
  • Prevents toddlers from unplugging devices.
  • Peace of mind for parents and caregivers.
  • Price Range: $9.95
  • 2

    Sigma Engineered Solutions Weatherproof Outlet Box

    Best Product
  • Weatherproof design for outdoor electrical safety.
  • Flexible mounting in vertical or horizontal positions.
  • Three 1/2-inch knockouts for easy installation.
  • Die-cast construction ensures long-lasting durability.
  • Includes necessary screws and ground screw for security.
  • UL listed and NEMA 3R rated for reliability.
  • Ideal for wet environments and outdoor applications.
  • Price Range: $6.63
  • Size: ‎1 Count (Pack of 1)
  • Material: Metal
  • 3

    Carlon [B114R-UPC] 1-Gang Outlet Box

    Best Product
  • Durable PVC construction for long-lasting use.
  • 1-Gang design for versatile electrical housing.
  • Ample 14 cu. in. capacity for wiring connections.
  • Easy installation in existing walls.
  • Secure mounting with included ears and clamps.
  • UL certified for safety and compliance.
  • Available in multiple gang configurations.
  • Price Range: $5.32
  • Size: ‎1 Gang
  • Material: Polyvinyl Chloride
  • 4

    XGGYA Old Work Electrical Outlet Box (1 Pack)

  • Easy installation with built-in fixing ears.
  • Solves aesthetic issues during renovation projects.
  • Compact size fits standard electrical needs.
  • Flame retardant PVC ensures safety and durability.
  • Ideal for DIY home improvement tasks.
  • Snap-on connection prevents loosening over time.
  • Compatible with various wiring standards.
  • Price Range: $5.99
  • Material: Plastic
  • 5

    RVGUARD 50 Amp Weatherproof Power Outlet Box

  • ETL Listed for safety and reliability.
  • NEMA 14-50R receptacle for versatile connections.
  • Weatherproof design protects against outdoor elements.
  • Heavy-duty metal construction with powder coating.
  • Lock included for added security and safety.
  • Spacious interior for easy cord connection.
  • Convenient knockout panels for installation flexibility.
  • Price Range: $25.91
  • Size: ‎50 AMP
  • Material: Metal
  • 6

    YQXIUTE 1-Gang PVC Electrical Box, Blue

  • 14 cubic inches capacity for electrical wiring.
  • Non-conductive PVC material ensures safety.
  • Easy installation with adjustable mounting tabs.
  • Designed for old work standard applications.
  • Lightweight at only 88g for convenience.
  • ETL certified for reliable performance.
  • Includes live hinges for cable access.
  • Price Range: $5.67
  • Material: Carbon Steel
  • 7

    TOPGREENER Recessed Outlet, 15A [2 Pack]

  • Recessed design for a clean, professional look.
  • Prevents cords from snagging and unplugging.
  • Durable, unbreakable polycarbonate thermoplastic construction.
  • Tamper-resistant for added safety and compliance.
  • Perfect for flat screens and A/V equipment.
  • Compact size fits standard electrical boxes.
  • Includes two outlets for convenience in installation.
  • Price Range: $15.39
  • Color: White
  • Material: Polycarbonate (PC)
  • 8

    LuSumtly Waterproof Electrical Junction Box (IP65)

  • IP65 waterproof rating for reliable outdoor use.
  • Durable ABS plastic for impact resistance.
  • Reserved holes for easy customization and installation.
  • Includes M24 hole saw for convenient drilling.
  • Comes with cable glands for secure connections.
  • Compact size: 5.9 x 4.3 x 2.8 inches.
  • Perfect for various indoor and outdoor projects.
  • Price Range: $5.99
  • Color: Black
  • Material: stainless_steel, iron, rubber, acrylonitrile_butadiene_styrene_abs, plastic
  • 9

    CycevSun [6 Pack] Plastic Outlet Boxes

  • Hassle-free installation with built-in clamps.
  • Designed for quick retrofitting in existing walls.
  • 2-3/4 inches deep for spacious wiring.
  • 14 cubic inch capacity for versatile use.
  • Ideal for outlets, dimmers, and thermostats.
  • Durable PVC construction for long-lasting performance.
  • UL certified for fireproof safety standards.
  • Price Range: $16.89
  • Color: 1-Gang
  • Material: Polyvinyl Chloride
  • 10

    Sealproof Weatherproof Outlet Cover Kit [1-Gang]

  • Durable polycarbonate construction for long-lasting use.
  • Lockable design for added security and safety.
  • Multiple configurations for versatile installation options.
  • Weatherproof powdercoat finish resists harsh elements.
  • Three 1/2 inch outlet holes for easy access.
  • UL Extra Duty compliant for wet locations.
  • Includes mounting hardware and closure plugs for convenience.
  • Price Range: $14.99
  • Color: Clear w/ Box
  • Material: Aluminum, Polycarbonate
  • 11

    Newhouse 2-Gang PVC Outlet Box [1-Pack]

  • 25 cubic inch capacity for 2-gang applications.
  • Adjustable mounting ears up to 7/8 inches.
  • Compatible with standard electrical devices and switches.
  • Built-in cable clamps secure wires firmly.
  • Ideal for residential and light commercial use.
  • UL and fire safety rated for reliability.
  • Compares favorably to Carlon electrical boxes.
  • Price Range: $5.16
  • Size: ‎25cuin
  • Material: Plastic
  • 12

    iMBAPrice [IMBA-BE1] Outlet Box Extender 2-Pack

  • Extends depth of electrical outlet boxes.
  • Compatible with 1-gang outlet boxes.
  • UL Listed for safety and reliability.
  • Durable high-impact plastic construction.
  • Easy installation for DIY and electricians.
  • Includes 64x flat head machine screws.
  • Accommodates thicker wiring and larger plugs.
  • Price Range: $6.98
  • Size: ‎1 Gang
  • Material: Plastic
  • 13

    Qbonway Outlet Spacer Shims (100pcs)

  • 100 pcs of versatile outlet spacers included.
  • Fixes deep outlet boxes seamlessly.
  • Easy to install and adjust.
  • Snaps together for customized spacing.
  • Designed for flush wall installation.
  • Perfect for tile backsplashes in kitchens.
  • Durable and reusable for multiple projects.
  • Price Range: $7.99
  • Color: Red
  • Material: Plastic
  • 14

    Sealproof Weatherproof Round Outlet Box [5 Holes]

  • Weatherproof design for outdoor electrical applications.
  • Constructed from heavy-duty die-cast aluminum.
  • Includes 5 convenient outlet holes for versatility.
  • Self-threading ground screws for easy installation.
  • Closure plugs included for unused holes.
  • Durable powdercoat finish withstands harsh weather.
  • UL Listed for safety and reliability.
  • Price Range: $7.49
  • Color: Bronze
  • Material: Aluminum
  • 15

    XGGYA 1-Gang PVC Electrical Outlet Box (1 Pack)

  • ETL listed for safety compliance and reliability.
  • Easy installation with included nails and knockouts.
  • Constructed from durable, high-temperature PVC.
  • Waterproof and dustproof design for longevity.
  • Suitable for residential and commercial applications.
  • 18 cubic inch capacity for versatile use.
  • Compatible with various wire gauges: AWG 9/14, 8/12, 7/10.
  • Price Range: $5.99
  • Material: Plastic