#1 Home Improvement Retailer

Internet #202077323

Model #B120R

Store SKU #141206

1-Gang 20 cu. in. Blue PVC Old Work Electrical Switch and Outlet Box

  • 20 cu. in. single gang box for Old Work applications
  • Includes integral clamps to hold wiring in place
  • PVC construction is classified for 2-hour fire wall rating
  • View More Details
0 in stock
Text to Me
How to Get It

Frequently Bought Together


Product Overview

The Carlon Zip Box Blue 1-Gang 20 cu. in. Old Work Non-Metallic Switch and Outlet Box is designed to work with non-metallic sheathed cable in accordance with Article 314 of the National Electric Code. Great for light commercial and residential applications, the box is crafted with non-conductive PVC for durability and is fire rated and UL listed to help ensure safety.
  • Use for old work applications in residential or commercial remodeling projects
  • Designed for use with non-metallic sheathed cable and listed for masonry walls
  • Sized for standard devices and switches and extra capacity for wiring and larger devices
  • Thermoplastic construction resists rust and will not conduct electricity
  • Built-in cable clamps hold wires firmly in place
  • Mounting ears, swing bracket and captive nails provide wide range of installation options
  • Meets NEMA OS-2, UL listed UL514C, E11461 and R9140
  • Add an additional outlet where you need it. Check out our Project Guide on How to Install Remodeling Boxes.

Additional Resources

From the Manufacturer

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar Boxes & Brackets

1-Gang Non-Metallic Low-Voltage Old Work Bracket
current product
1-Gang 20 cu. in. Blue PVC Old Work Electrical Switch and Outlet Box
4 in. Raised Ground Welded Square Electrical Box2-Gang 4 in. Square New Work Electrical Wall Box
Name1-Gang Non-Metallic Low-Voltage Old Work Bracket1-Gang 20 cu. in. Blue PVC Old Work Electrical Switch and Outlet Box4 in. Raised Ground Welded Square Electrical Box2-Gang 4 in. Square New Work Electrical Wall Box
Packaging TypeConsumer PackagingConsumer PackagingConsumer PackagingConsumer Packaging
Box TypeLow voltage boxWall boxWall boxWall box
Trade Size (in.)OtherOther1/2Other
Number of Gangs1122
Number of Knockouts/Pryouts00161
MountingScrew OnBracket,EarsSurfaceNail On
Electrical Product TypeBox/Conduit/Fitting AccessoryBoxBox/Conduit/Fitting AccessoryBox
View ProductView ProductView ProductView Product



Product Depth (in.)
Product Height (in.)
Product Width (in.)
Trade Size (in.)


Box Type
Wall box
Color Family
Electrical Product Type
Number of Gangs
Number of Knockouts/Pryouts
Pack Size
Packaging Type
Consumer Packaging
Power Distribution Features
Fire Rated
Product Weight (lb.)

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.6
    out of 163 reviews
  • 81%recommend this product
Filter by:
Showing 1-10 of 163 reviews
I got this for a new outlet in my storage unit. It worked great and I did not have any issues wit...
I got this for a new outlet in my storage unit. It worked great and I did not have any issues with it.
  • DIY
  • Recommended
2 found this review helpful
Best box for drywall
For any DIYers out there that have drywall in their homes, I highly recommend that you have a few of these boxes on hand. Installing an electrical box after the drywall is already up can be challenging, but this box helps to take away some of the difficulty. You have the freedom to install this box anywhere on the wall, rather than only next to a stud. There is no need to nail anything into place and this box, when tightened, holds securely to the wall. This box works great for retrofitting your home for wall mount televisions, installing additional light switches, adding outlets in places like the garage, and many other potential uses.
  • DIY
  • Recommended
21 found this review helpful
  • Verified Purchase
Representative was very helpful and profy...
Representative was very helpful and profy
  • Verified Purchase
The Quick and Easy Outlet Box for Existing Walls
The Right Component for the Right Task: Having these handy truly made adding additional outlets to a wall far easier and straightforward. A great solution for the DIY person wishing to add electrical outlets; good quality and simplicity in application avoids delays in completing such projects.
  • Verified Purchase
  • Recommended
The best old work box ever....
The best old work box ever.
  • Verified Purchase
  • Verified Purchase
Easy to install
I had to mount a Wi-Fi access point to the ceiling. Since the other side of the ceiling is an unconditioned attic, I had to use something that can be air sealed. I typically use an open back low voltage bracket for this, but you obviously can't air seal that properly. This old work box was easy to install and I can fit the cable with keystone and slack from a 6" slim patch cable. The access point mounted without issue on the box.
    • Recommended
    • Verified Purchase
    Quality Old Work Box
    Prefer the screw type new work/old work boxes but there are times when nothing to attach too or replace a previous old work box. For these, the Carlon boxes are the go-to. Quality is consistent and the cable clamps both work and are reliable. Price is good and never had one fail. Recommended.
    • Verified Purchase
    • Recommended
    Showing 1-10 of 163 reviews