








🛠️ Upgrade your electrical game with the fastest, safest splice box on the market!
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.
| 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 |
B**3
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.
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…
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.
A**R
Good product!
A little on the pricier side but worked great for the one I needed! Loved the versatility
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.
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!
G**8
Works great, easy to install.
I needed to do some wiring in my attic and needed something that would be easy and secure. This worked perfectly for my purposes. It does seem a little pricey for what it really is, but its a very good product.
A**S
Exactly what I needed
If you are in need of a approved cover for splicing romex in an attic, crawl space etc, this is perfect. You do not need to mount it anywhere just push in the tabs and drop your cable in the box and screw the top down. Drop it and you are done!!!! Exactly what is needed if you want to do it correctly and not leave a exposed splice laying around!!!!
E**O
I discovered unboxed splice wire in the basement. Didn’t want to unscrew the wire nuts and rethread everything into a box. This just made the job so much easier. I chose this box for its hexagon shape because the wires were coming in at different angles, this box worked perfectly for that. Made the job quick and easy. Lots of nailing options as well
N**E
Very easy to use for a casual DIYer.
D**N
Excellent delivery time. Item is a bit bulky but did the job perfectly. A consideration would be to have different sizes of boxes where some are flater, less bulky. Otherwise an excellent solution to my problem. Would recommend it and would buy again.
T**Y
Super easy and no need to detach wires. Took away one star because it's expensive for one plastic box.
A**N
It is exactly what I needed to fix an electrical outlet.
Trustpilot
2 weeks ago
2 weeks ago