






⚡ Upgrade your wiring game: fast, safe, and code-compliant in seconds!
The Rack-A-Tiers Open Splice Junction Box (JB400) is a UL-listed, fire-resistant polymer electrical box designed for quick, safe repairs of open wire splices. With 25.8 cubic inches of capacity and a patented one-piece hinged design, it enables 5-second installation without rewiring. Made in the USA and compliant with U.S. and Canadian safety codes, it offers electricians and DIYers a durable, labor-saving solution to meet legal wiring standards effortlessly.
| ASIN | B0C765NZB2 |
| Best Sellers Rank | #21,409 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #50 in Electrical Boxes |
| Brand | Rack-A-Tiers |
| Brand Name | Rack-A-Tiers |
| Capacity | 25.8 Cubic Inches |
| Customer Reviews | 4.6 out of 5 stars 754 Reviews |
| 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 | JB400P |
| Product Dimensions | 2"D x 5"W x 5"H |
| Specification Met | Csa |
| Style | Safety |
| UPC | 625912324008 |
A**K
Exactly what we needed
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.
R**E
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…
B**B
Great idea!
This was so easy to use, perfect size, I didn’t want to undo the wires, but they needed to be in a box, this works great. Looks nice and clean, it’s solid box. Great idea!
A**R
Good product!
A little on the pricier side but worked great for the one I needed! Loved the versatility
N**3
No more open wires
Wash to set up with 2 choice of side opening on each side, 4 total. Did not have to disconnect wires and installed the holder with bigger screws than provided.
A**M
Perfect solution
Install went great, product is excellent fit & solution for the job. Thoughtfully designed & well made, and made in USA! Price point could be better & hopefully over time price will come down, but for now it was worth it to fix the one open splice area with some access difficulty & quickly. I could part with a few extra dollars to create a safer & compliant situation to put my mind ease. Also, a really well made box & the hexagonal design is excellent to fix many situations, may consider for future use as junction box in another area.
R**O
Great product
Great profuct
A**R
Easy-to-use/Time Saver
This product is the best invention since the Edison light bulb. Splicing electric wires in a Hot 🔥 uncomfortable Attic is no longer a problem. The Rack-A-Tiers Open splice box is a fast , Easy and cost effective way to get the Job done . To all the the fellow electrician out there you have to try this product . Here are a few reasons why. This product is durable and meets all UL listing . The best feature about the splice box is you don't have pull the old wire apart and kill the circuit wasting valuable time. Just install the box around open splice attach the box to the proper support (screws included) push the lid down and the job is Done ✔️. I give this product a 5 star .
Trustpilot
1 month ago
2 weeks ago