--- product_id: 534809354 title: "Open Splice Junction Box (Single) (UL Listed) Repair Open Splices, 5 Second Installation, Electrical Junction Box (JB400)" brand: "rack-a-tiers" price: "106.55 DT" currency: TND in_stock: true reviews_count: 13 category: "Rack A Tiers" url: https://www.desertcart.tn/products/534809354-open-splice-junction-box-single-ul-listed-repair-open-splices store_origin: TN region: Tunisia --- # 25.8 cu in volume 5-second install UL & CSA fire-resistant Open Splice Junction Box (Single) (UL Listed) Repair Open Splices, 5 Second Installation, Electrical Junction Box (JB400) **Brand:** rack-a-tiers **Price:** 106.55 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Upgrade your electrical game with the fastest, safest splice box on the market! ## Quick Answers - **What is this?** Open Splice Junction Box (Single) (UL Listed) Repair Open Splices, 5 Second Installation, Electrical Junction Box (JB400) by rack-a-tiers - **How much does it cost?** 106.55 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/534809354-open-splice-junction-box-single-ul-listed-repair-open-splices) ## Best For - rack-a-tiers enthusiasts ## Why This Product - Trusted rack-a-tiers brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Maximized Wiring Space:** Generous 25.8 cubic inches volume with four-side slots for versatile wire management. - • **Labor-Saving Innovation:** No need to disconnect or redo wiring—save hours on every job and stay ahead of code violations. - • **Code-Ready Safety Assurance:** Built from fire-resistant polymer, UL 514C & CSA C22.2 #182 certified for peace of mind. - • **Made in the USA, Built to Last:** Premium quality and durability you can trust, supporting local manufacturing. - • **Effortless 5-Second Installation:** Cut downtime with a patented one-piece design and simple 3-step process—no rewiring needed. ## Overview The Rack-A-Tiers Open Splice Junction Box (JB400) is a UL-listed, fire-resistant polymer electrical junction box designed for quick, code-compliant repairs of open wire splices. Featuring a spacious 25.8 cubic inch capacity and a patented one-piece hinged lid, it enables a 5-second installation without rewiring. Made in the USA and rigorously tested to meet U.S. and Canadian safety standards, this splice box simplifies electrical repairs while ensuring maximum safety and durability. ## Description Open Splice Junction Box is a one-piece electrical junction box that helps you encase open splices in minutes. Open splices are a common, but dangerous, electrical wiring issue. They need to be repaired right away but with traditional junction boxes you can easily find yourself wasting time and money rewiring and remaking open splices. Wire splices left open need a wire cover, and none are as easy-to-use as this. Cut how much time you spend in damp crawl spaces and hot, dark attics trying to work in poorly designed standard junction boxes. Go from dangerous, illegal open splices done by amateur handymen to a fully installed and safe junction box with just 4 screws and a few minutes of your time. This ingenious electrical wire cover makes the routine job of repairing open wire splices less tedious. If the connectors are tight and undamaged, you can bring electrical work up to code without splicing wires from scratch with the Open Splice Junction Box. Mfg. Note: Always inspect the wires to make sure the connectors are in good shape before enclosing the splice. Review: Great Junction Box - Excellent junction box that makes exposed connections a lot safer in an old house without having to undo wiring. Also helps when you have to repair wiring and want to add a junction box. Review: Easy to use - Quality product- So easy to use, helped make it so I didn’t have to pull all wires out and start over- Worth every penny in labor saving costs… ## Features - 25.8 Cubic inches of volume. - No need to disconnect the wiring. - Slots for wiring on four sides of the junction box. - Splice Box Made in the USA. - SAFE – Developed through rigorous laboratory testing, this j-box (junction box) is built with fire-resistant polymer designed to meet U.S. (U.L. 514C) and Canada (CSA C22.2 # 182) safety codes. Safely enclosing open wire splices is your legal responsibility and this wire cover is the most effortless method. - SOLID – The patent-pending one-piece design means fewer parts and pieces to manage. With the hinged lid that folds down to seal the wire splice, you no longer have to re-wire open splices to get them in the junction box. - SIMPLE – The revolutionary 3-step install process makes taking care of this common code violation easy for electricians and DIYers alike and turns splice box installation into a quick job. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C765NZB2 | | Best Sellers Rank | #49,574 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #107 in Electrical Boxes | | Brand Name | Rack-A-Tiers | | Capacity | 25.8 Cubic Inches | | Customer Reviews | 4.6 4.6 out of 5 stars (557) | | Finish Type | Powder Coated | | Installation Type | Screw-In | | Item Dimensions D x W x H | 2"D x 5"W x 5"H | | Item Weight | 0.1 Kilograms | | Manufacturer | Rack-a-tiers | | Material | fire-resistant polymer | | Model Number | JB400 | | Specification Met | Csa | | Style | Safety | | UPC | 625912324008 | ## Product Details - **Brand:** Rack-A-Tiers - **Finish Type:** Powder Coated - **Material:** fire-resistant polymer - **Product Dimensions:** 2"D x 5"W x 5"H - **Style:** Safety ## Images ![Open Splice Junction Box (Single) (UL Listed) Repair Open Splices, 5 Second Installation, Electrical Junction Box (JB400) - Image 1](https://m.media-amazon.com/images/I/71SjSo5LfoL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Junction Box *by B***3 on March 22, 2026* Excellent junction box that makes exposed connections a lot safer in an old house without having to undo wiring. Also helps when you have to repair wiring and want to add a junction box. ### ⭐⭐⭐⭐⭐ Easy to use *by R***E on February 15, 2026* Quality product- So easy to use, helped make it so I didn’t have to pull all wires out and start over- Worth every penny in labor saving costs… ### ⭐⭐⭐⭐⭐ Exactly what we needed *by A***K on July 29, 2025* I needed this for a specific project and it worked out perfectly. The material feels really durable and well-made — not flimsy at all like some others I’ve tried in the past. The measurements were spot on, and it held up beautifully through installation. It was easy to install. Just make sure you double-check that this is the right size and type for your project, and you’ll be totally satisfied. Great value and excellent quality — I’d definitely order again if I need more. ## Frequently Bought Together - Rack-A-Tiers Open Splice Junction Box - Single, 5 Second Installation, Repair Open Splices - Southwire Romex Brand Simpull Solid Indoor 14/2 W/G NMB Cable 25ft coil - SW# 28827421 - WAGO 221 Lever Nuts 28pc Compact Splicing Wire Connector Assortment with Case | Includes 221-2401, 221-412, 221-413, 221-415 --- ## 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.tn/products/534809354-open-splice-junction-box-single-ul-listed-repair-open-splices](https://www.desertcart.tn/products/534809354-open-splice-junction-box-single-ul-listed-repair-open-splices) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-09*