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Internet # 300851119

Model # WRB550PG

Store SKU # 707415

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4 in. Round Non-Metallic Weatherproof Outlet Box with (5) 1/2 in. Holes, Gray

$11.27
  • Use with non-metallic wiring systems. Suitable for wet locations.
  • 4 in. Round Box Capacity: 13.5 cu in (220 mL)
  • Mounting hardware & closure plug(s) sold separately
  • View More Details

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Product Details

About This Product

Commercial Electric 4 in. Round Non-Metallic Weatherproof Outlet Box with (5) 1/2 in. Holes, Gray rated to protect branch circuits in wet, damp, and/or dry locations. Powder coat finish provides maximum weatherability and scratch resistance. Boxes can serve as a junction box or as housing for receptacles, switches, and GFCIs. Hubs accept all threaded fittings and threaded conduit. Available in both gray and white.

Highlights

  • High-impact PVC construction
  • 13.5 cu. in. capacity
  • Five 1/2 in. holes
  • Use (2) #10-24 screws to mount (sold separately)
  • NEMA 3R compliant
  • 300 lbs. load carrying capacity
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 300851119

Model # WRB550PG

Store SKU # 707415

Additional Resources

Shop All Commercial Electric

Specifications

Dimensions

Product Depth (in.)

1.5 in

Product Height (in)

5.37

Product Width (in.)

4.25 in

Details

Application

Ceiling

Box Type

Light Fixture

Color Family

Gray

Conduit Compatibility

EMT (Electrical Metal), ENT (Electrical Nonmetallic), FMC (Flexible Metal), IMC (Intermediate Metal), LiquidTight, RMC (Rigid Metal)

Indoor/Outdoor

Indoor, Outdoor

Knockout/Hole Size (in.)

1/2

Material

Polycarbonate

Metallic/Non-Metallic

Non-Metallic

NEMA Configuration

NEMA 3R

Number of Knockouts/Holes

5

Pack Size

1

Returnable

90-Day

Shape

Round

Warranty / Certifications

Certifications and Listings

cULus Listed

Manufacturer Warranty

1-Year

Questions & Answers

Support ceiling fans
BySep 29, 2026
1 Answer | 
Answer This Question

Hi Chris, this box is not rated to support ceiling fans.

By|Oct 2, 2026


    Can I use this as a box extender when I knock the back out? I need a non-metallic one, and couldn't find one.
    ByFeb 25, 2026
    1 Answer | 
    Answer This Question

    Hi Prov3125, the product is not tested or approved for that purpose.

    By|Mar 1, 2026

      (1)

      Spacing of the 2 mounting posts?
      ByNov 27, 2025
      1 Answer | 
      Answer This Question

      Hi ChemE75 the spacing directly across is 3.5"

      By|Nov 28, 2025


        Can this product be used simply as a junction box for splicing wires together?
        ByAug 25, 2025
        1 Answer | 
        Answer This Question

        Hi Michael, yes in an outdoor application with a round blank cover, Model # WBC300G Store SKU # 562523.

        By|May 24, 2026

          (2)

          Can these be embedded in concrete during new construction?
          ByJul 10, 2025
          1 Answer | 
          Answer This Question

          Hi Hello, they are not tested for concrete.

          By|Jul 14, 2025


            How to you remove the knockouts without destroying the box? Specifically, the back middle knockout? Do you remove it outside or inside? A flat blade and hammer do not seem remove it just crack a piece off. Please provide detailed instructions.
            ByApr 14, 2025
            1 Answer | 
            Answer This Question

            Hi Tast, most use a flat blade and hammer from the outside in.

            By|Apr 14, 2025


              How do you remove the "knockouts" without damaging the box or its threads?
              ByOct 5, 2024
              1 Answer | 
              Answer This Question

              Hi Dennis, the easiest way is to use a flat head screwdriver that you can tap with a hammer.

              By|Feb 28, 2025

                (1)

                Can this be used to mount an outside light
                BySep 2, 2024
                1 Answer | 
                Answer This Question

                Hi Timbo, yes, it is rated for outdoor use.

                By|Sep 3, 2024


                  Viewing 1-8 of 16

                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 156 reviews
                  • 83% recommend this product
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                  1 found this review helpful
                  Right for the job I was doing.
                  It worked out perfect for mounting my security light.
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                  1 found this review helpful
                  easy to install recomend to include screws with it
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                  Perfect! Worked great for new lights mounted under deck.
                  by
                  The box was easy enough to get into the house but the screw holes were not easy for me to put a fixture on
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                  Showing 1-10 of 156 reviews

                  Compare Key Features

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                  Product Snapshot

                  Ideal for indoor/outdoor electrical projects, this weatherproof box features durable PVC construction and 13.5 cu. in. capacity.
                  Ideal for electricians and DIYers who need a reliable junction box. This durable, non-corrosive PVC box ensures safe and easy electrical connections.
                  Built for durability and weather resistance, this 2-gang steel box is ideal for outdoor electrical projects.
                  Built for durability, this 2-gang steel weatherproof box with 7 knockouts is ideal for indoor/outdoor electrical projects.

                  Material

                  High-impact PVC
                  PVC
                  Steel
                  Steel

                  Number of Gangs

                  0
                  2
                  2

                  Capacity

                  15.16 cu. in.

                  Dimensions

                  H: 2.5 in. W: 4.75 in. D: 4.75 in.

                  Fire Resistance