--- product_id: 208848001 title: "BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8\" Width x 8\" Height x 4\" Depth, Gray Finish" brand: "bud" price: "$148.69" currency: USD in_stock: true reviews_count: 5 url: https://www.desertcart.us/products/208848001-bud-industries-jb-3957-ko-steel-nema-1-sheet-metal store_origin: US region: United States of America --- # ANSI 65 durable powder coating Lift-off screw cover with keyhole ease 16 GA heavy-duty welded steel BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish **Brand:** bud **Price:** $148.69 **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects with steel-strong reliability and sleek efficiency! ## Quick Answers - **What is this?** BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish by bud - **How much does it cost?** $148.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/208848001-bud-industries-jb-3957-ko-steel-nema-1-sheet-metal) ## Best For - bud enthusiasts ## Why This Product - Trusted bud brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Robust 16 gauge welded steel ensures industrial-grade durability for your critical electrical setups. - • **Secure Mounting:** Four rear wall mounting holes plus embossed grounding hole for flush, safe, and stable installation. - • **Effortless Access:** Screwed-on flat cover with keyholes enables quick, tool-friendly assembly and maintenance. - • **Versatile Knockouts:** Concentric knockouts on all four sides fit standard conduit sizes, maximizing installation flexibility. - • **Sleek & Protective Finish:** ANSI 65 gray powder coating resists corrosion and wear, maintaining a professional look over time. ## Overview The BUD Industries JB-3957-KO is a heavy-duty 16 gauge welded steel NEMA 1 junction box featuring a lift-off screw cover with keyholes for easy access, concentric knockouts on all sides for versatile conduit compatibility, and a durable ANSI 65 gray powder-coated finish. Designed for secure wall mounting with four rear holes and an embossed grounding hole, it meets industry standards for electrical junction and pull box applications. ## Description This heavy duty steel junction box is well suited for a variety of junction and pull box electrical applications. Heavy duty 16 ga welded steel construction. Screwed on flat cover with key holes for easy assembly. Boxes with knockouts have easily removable concentric knockouts on all four sides for industry standard conduit sizes. Four wall mounting holes in back. Embossed grounding hole in bottom allows easy access and flush wall mounting. Durable ANSI65 grey powder coating. Complies with NEMA and UL type 1 rating. Ul listing pending. Ratings : NEMA 1. 32.0" Area (length by width). Cover included design. Knockouts, wall mount features. ## Features - Heavy duty 16 GA welded steel construction - Screwed on flat cover with key holes for easy assembly - Four wall mounting holes in back - Durable ANSI 65 grey powder coating - Measures 8" width by 8" height by 4" depth ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B005UP9ML8 | | Brand Name | Bud | | Colour | Has Knockouts | | Country Of Origin | China | | Customer Reviews | 4.7 4.7 out of 5 stars (165) 4.7 out of 5 stars | | Finish Type | Powder Coated | | Installation Type | Screw-In | | Item Weight | 18 g | | Manufacturer | BUD Industries | | Material | Alloy Steel | | Model Number | JB-3957-KO | | Part Number | JB-3957-KO | | Specification Met | ul | | Style | Lift-Off Screw Cover | | Unit Count | 1.0 count | | Upc | 696746711371 | ## Product Details - **Material:** Alloy Steel - **Brand:** Bud - **Colour:** Has Knockouts - **Style:** Lift-Off Screw Cover - **Finish type:** Powder Coated ## Images ![BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish - Image 1](https://m.media-amazon.com/images/I/71e3MCv3usL.jpg) ![BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish - Image 2](https://m.media-amazon.com/images/I/714CCh8Ud8L.jpg) ![BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish - Image 3](https://m.media-amazon.com/images/I/817ssKmh+WL.jpg) ![BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish - Image 4](https://m.media-amazon.com/images/I/71+JPjkjMzL.jpg) ![BUD Industries JB-3957-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-Off Screw Cover, 8" Width x 8" Height x 4" Depth, Gray Finish - Image 5](https://m.media-amazon.com/images/I/81w8nmUvPBL.jpg) ## Available Options This product comes in different **Size Name** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Heavy construction *by on Reviewed in Canada 6 November 2024* Was impressed for the price-nice finish and heavy gauge material- would recomend and purchase again. ### ⭐⭐⭐⭐⭐ good *by on Reviewed in Canada 27 October 2022* Good thick steel box. Has lots of knockouts along the sides, a ground terminal and cover. paint and finish is good. I am using it to house sauna controls and a contactor. I set it in a wall between studs. ### ⭐⭐⭐⭐⭐ Solid box *by on Reviewed in Canada 7 March 2021* Yep, if you need a box this size, then just order it. Has a grounding lug inside which is nice. Nice and thick wall construction. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/208848001-bud-industries-jb-3957-ko-steel-nema-1-sheet-metal](https://www.desertcart.us/products/208848001-bud-industries-jb-3957-ko-steel-nema-1-sheet-metal) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-09*