Westlake PVC 12 × 12 × 4 junction box, waterproof rated for outdoor
  • In Stock

      Westlake PVC 12x12x4 Electrical Junction Box JB12124

      Westlake JB12124 is a 12 × 12 × 4″ gray PVC conduit junction box with gasketed cover, offering 578 cu‑in capacity and NEMA 1/2/3/4/4X-rated protection. Ideal for PVC rigid conduit systems in commercial, industrial, and outdoor wiring applications.

      Score: 4.00 (votes: 1)
      Reviews: 1
      4.00|
      Royal
      139   – Loyalty Rewards
       
      • $139.95
      Combined Branch Stock(1 item available) Central Warehouse Stock (0)

      The Westlake JB12124 PVC junction box (12″ × 12″ × 4″) is a high-capacity, gasketed enclosure made from UV- and impact-resistant PVC. Designed for use with rigid PVC conduit, it features threaded mounting, a watertight NEMA 1/2/3/4/4X rating, and a roomy 578 cu‑in interior—perfect for commercial, industrial, and outdoor electrical installations.

      As a 100% Canadian‑owned wholesaler, Evolt offers this junction box at competitive pricing, bundled with fast shipping across Alberta and BC, and supported by knowledgeable service teams. Electrically rated quality PVC construction without overpaying for rebates or inflated national-brand pricing.

      Frequently Asked Questions

      Q: Is JB12124 suitable for outdoor installations?

      A: Yes the gasketed cover and NEMA 4/4X rating ensure dust and water-resistance for outdoor use.

      Q: What conduit type is compatible?

      A: Designed for use with rigid PVC conduit threaded mounting simplifies installations.

      Q: Can this box be used in corrosive or acidic environments?

      A: Absolutely—PVC resists corrosion from chemicals, acids, and alkalis, making it ideal for harsh conditions.

      Common Use Scenarios

      Commercial buildings – protect wiring and join conduits in ceiling and wall systems.

      Outdoor/industrial sites/barns – durable enclosure for lighting controls, sensor wiring junctions.

      Corrosive environments – ideal for agricultural, chemical, or food‑processing facilities.

      Installation Tips

      Mount securely using the threaded bosses to maintain sealed fit and prevent moisture ingress.

      Use PVC solvent or O-ring connectors for rigid conduit entry, ensuring watertight integrity inside the box.

        • SKU
          PVCJB12124
        • Weight
          1 lbs
        • Manufacturer Part #
          PVCJB12124
      • Trade Size
        12x12x4
      • Brand
        Royal
      • Warranty
        5 year
      Customer reviews
      Average rating:
      4.00(Votes: 1)
      Rating of votes (1)
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      • Dave
        Mar 21, 2024, 01:23 PM
        This is just as good if not better than the big name brand. These guys are easy to deal with. Bought from Evolt for years, always good service.
        Evolt Electrical Supply
        Jun 15, 2025, 07:24 AM
        Total agreement with you.

      Minimum Order $20

      We accept the following payment methods:

      Accepted payment methods

      Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.

      Click here for Contractor Cash Account


      Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only. 

      Click here for Contractor Credit Account 


      (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

      Product questions

      No questions yet. Be the first to ask the question!

      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. 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.

      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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