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4 in. Square Shallow Electrical Box · 1-1/2 in. Deep, 21 cu. in., 1/2 in. & 3/4 in. KO · Raised Ground Screw · Vista 52151K
SKU: 52151K
4 in. square shallow steel box for ceiling or wall junctions, with 1-1/2 in. depth, 21 cu. in. capacity, raised ground screw, and concentric 1/2 in. and 3/4 in. knockouts. Commonly used where multiple conductor runs split in two or more directions for branch circuit wiring.
Delivered to you by Oct 19 (Within Western Canada)
If shipping issues arise, contact us and we’ll work with the courier to keep your job on track.
What this product is for
This 4 in. square shallow electrical box is used for ceiling and wall junctions where conductors need to be spliced or distributed to multiple directions. It provides a 1-1/2 in. (38 mm) depth and 21 cu. in. (344 cm³) capacity for typical branch circuit box-fill requirements.
Use for
Use for exposed or concealed junction points, lighting connections, and conduit runs where a 4 in. square metal box with 1/2 in. and 3/4 in. knockouts is required. Suitable when you need a standard shallow 4S box format with a raised ground screw for bonding.
Avoid for
Avoid where deeper box capacity, device mounting, weatherproof construction, or non-metallic cable clamps are specifically required. If conductor count is high, verify box-fill before ordering.
Best for
Best for electricians and contractors needing a standard 4 in. square steel junction box for commercial, institutional, and residential rough-in or retrofit work using conduit systems. Combination knockouts help when field conditions vary between 1/2 in. and 3/4 in. raceway.
Installed in
Typically installed in walls, ceilings, service spaces, and junction locations in commercial and residential buildings across Canada. Commonly paired with square covers, mud rings, or fixture supports matched to the application.
Why this product exists
This box gives installers a standard metal junction enclosure with practical cubic capacity and flexible knockout options in a compact shallow profile. It is designed for branch circuit splicing and power distribution where multiple conductor runs branch out from one point.
Compared with similar products
Compared with deeper 4 in. square boxes, this shallow 1-1/2 in. model saves space where wall or ceiling depth is limited, but it offers less conductor volume than deeper alternatives. Compared with fixed-size knockout boxes, the concentric 1/2 in. and 3/4 in. knockouts provide more installation flexibility.
Typical guidance only: shallow boxes are commonly chosen where space is tight, but actual box-fill depends on conductor count, device allowance, fittings, and local electrical code.
Specifications
- Box type: 4 in. square shallow electrical box
- Material: Steel
- Size: 4 in. square (102 mm square)
- Depth: 1-1/2 in. (38 mm)
- Capacity: 21 cu. in. (344 cm³)
- Knockouts: Concentric 1/2 in. and 3/4 in.
- Grounding: Raised ground screw
- Application: Ceiling or wall junction box for multiple conductor runs
- Pack quantity: 50-pack per manufacturer spec sheet
- Compliance: UL Listed
- Gang4" X 4"
- ColourGalvanized
- Used InWood Frame
- Capacity21 Cubic Inches
- Similar ToBC52151-K
- BrandWhite Label
- Warranty5 year
Minimum Order $20
We accept the following payment methods:
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Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
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
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(Updated August 2026)
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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