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PVC Junction Box · 12 x 12 x 4 in · Gasketed NEMA 4X Enclosure · Westlake Pipe & Fittings RJB12124
SKU: RJB12124
Gasketed PVC junction box for rigid PVC conduit systems, sized 12 x 12 x 4 in (305 x 305 x 102 mm) with approximately 578 cu in capacity. Commonly used where corrosion resistance and weather protection matter, including outdoor and washdown-adjacent installations; actual suitability depends on conduit entry method, sealing, and local electrical code.
What this product is for
This is a non-metallic PVC junction box with gasketed cover for enclosing wire splices and pull points in rigid PVC conduit systems. It is intended for applications where moisture resistance, corrosion resistance, and a larger wiring space are needed.
Use for
Use for commercial, industrial, agricultural, pool and spa, and outdoor electrical installations using rigid PVC conduit. It is commonly selected where metal boxes may be affected by moisture, chemicals, or corrosive atmospheres.
Avoid for
Avoid using this box where a metallic enclosure is specifically required, where unsupported field modifications would compromise the enclosure rating, or where the installation method does not maintain the gasketed seal. Always confirm box fill, conductor bending space, and code requirements before installation.
Best for
Best for larger conduit junctions, branch circuit transitions, and outdoor pull or splice points where a gasketed non-metallic enclosure is preferred. Also well suited to corrosive or damp locations where PVC offers an advantage over painted steel.
Installed in
Typically installed on walls, service areas, mechanical spaces, agricultural buildings, industrial process areas, and exterior locations. Commonly paired with rigid PVC conduit in washdown-adjacent, chemical, or weather-exposed environments.
Why this product exists
This box provides a larger enclosed junction space while helping maintain environmental protection in PVC conduit systems. Compared with standard utility boxes, the 12 x 12 x 4 in format gives more working room for splicing and conductor management.
Typical trade guidance: larger junction boxes like this are commonly chosen to improve conductor bending space and simplify pulling and splicing, but actual box sizing must be based on conductor count, wire size, fittings, and code. Actual performance depends on installation conditions, layout, and local electrical code.
Compared with similar products
Compared with smaller PVC junction boxes, this 12 x 12 x 4 in (305 x 305 x 102 mm) size offers more interior volume for larger pulls and more complex splices. Compared with metal enclosures, PVC is typically preferred where corrosion resistance and non-metallic construction are priorities. Compared with non-gasketed boxes, the gasketed cover helps support use in wet or washdown-prone areas when installed correctly.
Specifications
- Product type: PVC junction box with gasketed cover
- Brand: Westlake Pipe & Fittings
- Manufacturer part number: RJB12124
- Nominal size: 12 x 12 x 4 in (305 x 305 x 102 mm)
- Approximate inside dimensions: 12.085 x 12.085 x 4.03 in (307 x 307 x 102 mm)
- Approximate outside dimensions: 12.5 x 12.5 x 4.25 in (318 x 318 x 108 mm)
- Cubic capacity: approximately 578.3 cu in
- Material: PVC
- Colour: Gray
- Cover style: Gasketed cover
- Hardware: Brass screws and inserts
- Mounting: Threaded / screw mount
- Conduit compatibility: For use with rigid PVC conduit systems
- Environmental ratings referenced by distributors: NEMA 1, 2, 3, 4, 4X
- Knockouts: No
- Country context: Made in Canada listing indicated in source catalog context
Minimum Order $20
We accept the following payment methods:
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(Contractor Accounts)
Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.
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