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⚡ Elevate your electrical setup with sleek, safe, and smart surface mounting!
The Leviton Surface Mount Backbox 42777-1WB is a compact, 1.45-inch deep, single gang electrical box designed for surface mounting. Made from fire-retardant plastic and finished in white, it features UL and CSA certifications for commercial-grade safety. Its breakout design aligns with common raceway systems, enabling flexible and clean installations in hard-wall or open-office environments. Perfect for modern upgrades where wall cutting is impractical, it seamlessly matches Leviton's color-coordinated wallplates for a professional finish.

| ASIN | B00332F4I0 |
| Best Sellers Rank | #43,018 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #73 in Electrical Outlet Boxes |
| Brand | Leviton |
| Brand Name | Leviton |
| Color | White |
| Customer Reviews | 4.5 out of 5 stars 529 Reviews |
| Finish Type | Painted |
| Global Trade Identification Number | 00078477963548 |
| Included Components | 42777-1WB |
| Installation Type | Surface Mount |
| Item Dimensions D x W x H | 1.45"D x 4.5"W x 1.45"H |
| Manufacturer | Leviton |
| Material | Plastic |
| Model Number | 42777-1WB |
| Part Number | 42777-1WB |
| Product Dimensions | 1.45"D x 4.5"W x 1.45"H |
| Specification Met | Ul |
| Style | Compact |
| UPC | 078477963548 |
| Unit Count | 1 Count |
| Warranty Description | Manufacture |
C**I
Works great
Works great for installing UniFi in-wall AP in a garage.
G**B
Lifesaver
These were a lifesaver. I updated the switches and plugs on a house built in 1970. There were 3 outlets in a room, all a slightly different height, and buried partway in a shelf. I brought the wires forward , mounted these on top of the shelves and it looks so nice. I hate having to cut wall plates. Especially 3 different sizes. There are several holes in the back of the box, and I was able to find the right hole configuration for each one to mount securely to the holes in the electrical box. I had to make a couple of the holes larger, which wasn't a problem since these are plastic. And no visible exterior knockouts. More room and flexibility than a wiremold extension box.
H**P
Back snaps on and off making this a easy install for a cramped space
I added an outlet inside a cabinet for so lighting. I was please to discover that the back snaps off the box, making it easy to work with. Mounted the back plate, hooked up the duplex then snapped the box back in place. Clean look since the only knock outs is in the back plate
M**O
Simple to use, especially for an RF 3-way switch
Used this to mount a remote RF 3-way switch on a concrete basement wall. Perfect.
A**N
Does what it needs to do
I used this for an Ethernet cable with faceplate. Worked great.
P**Y
Really cool
My first time using one of these and it was really easy. The cut outs pop out easily depending on what you need. The holes are predrilled and the box is get plastic. All of it was easy and I would highly recommend this
D**.
The box works well.
This box works well for 1-gang switches. The plastic is a little brittle so be careful when breaking out the tabs.
A**R
Comes apart when unplugging cord
Bought two, one of which comes apart when I unplug a cord. The back plate is attached to the surrounding walls with four snaps, and this somehow doesn't hold for me. I have a tamper resistant socket so there's some additional force but I don't think it should come apart like this. The other of the two I bought works perfectly fine
M**Z
Excelente
Excelente producto de alta calidad y bajo precio. Lo recomiendo ampliamente.
R**M
As Advertised
This works well for an electrical box but has no wire clamp to hole wire where it enters the box. Also, it has limited options as to what to punch out for wire access. Even so, it worked well for me.
S**I
Slim box high quality abs
1.45” perfect for receptacles
A**M
Did the trick…. Would consider ordering again…. Maybe.
I needed a thin box for a plug beside a stair well and this did the trick. The plastic was good and thick and the screw threads were brass so that was really nice. It worked for my application but the down fall was the way it needed to be mounted. You could use the mounting screws at the back but would have been nice to have a way to mount it to drywall like a tiger box. I still liked it and if I need one again I would consider it for sure.
R**N
Très bien conçu et utile.
Excellent produit et bien conçu. Multiples possibilités d'installation.
Trustpilot
2 days ago
5 days ago