ABB - Installation Products MB120ADJ - Single Gang Adjustable Wall Box, 20 Cubic Inches, 3.28 Inches Long x 2.20 Inches Wide x 3.52 Inches Deep, 1/2 Inch Knockouts, Pre-Galvanized Steel, For use with 4 Inch Square Boxes
ABB - Installation Products

MB120ADJ

UPC: 034481193432


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Overview

The ABB MB120ADJ Single Gang Adjustable Wall Box (SKU: MB120ADJ) is a precision-engineered electrical enclosure designed for seamless integration with 4-inch square boxes in residential, commercial, and industrial installations. Constructed from pre-galvanized steel, this wall box delivers superior corrosion resistance and long-term durability, ensuring reliable performance in demanding environments. With a 20 cubic inch internal volume, the MB120ADJ provides ample space for wiring and electrical components, accommodating standard devices while maintaining a compact footprint. The 1/2-inch knockouts enable flexible conduit entry, simplifying installation and reducing labor time for electricians and contractors. Engineered for versatility, the MB120ADJ features adjustable compatibility with 4-inch square boxes, making it ideal for retrofits or new construction where dimensional flexibility is required. Its dimensions of 3.28 inches long x 2.20 inches wide x 3.52 inches deep optimize space utilization without compromising functionality. The pre-galvanized steel construction meets industry standards for structural integrity and electrical safety, ensuring compliance with NEC and OSHA requirements. Suitable for applications ranging from office buildings and retail spaces to manufacturing facilities and utility rooms, the MB120ADJ is a cost-effective solution that balances performance, durability, and ease of installation. Trust ABB Installation Products, a leader in electrical infrastructure solutions, to deliver components that meet the rigorous demands of professional electrical work. Whether you're wiring a new circuit or upgrading existing infrastructure, the MB120ADJ provides the reliability and adaptability needed for long-term electrical system performance.
  • 20 cubic inches internal volume for ample wiring space
  • Pre-galvanized steel construction for superior corrosion resistance
  • 1/2-inch knockouts for flexible conduit entry
  • Adjustable design compatible with 4-inch square boxes
  • Compact dimensions: 3.28" L x 2.20" W x 3.52" D

Specifications

Application
Accommodates non-metallic cable (NMSC), flexible cable (ACC/MC) and EMT (Conduit)
Color
Silver
Cubic Capacity
20 in3
Depth
3.52 in
Depth
89.408 mm
Knockouts
5
Material
Steel
Material
Pre-Galvanized Steel
Material Quality
Steel
Mounting Type
Adjustable for 4 Inch Square Boxes
Number Of Outlet
1
Series
MB
Size
3.28 Inches Length x 2.2 Inches Width x 3.52 Inches depth
Size
3.28 Inches Long x 2.20 Inches Wide x 3.52 Inches Deep
Size
3.28 Inches Long x 2.20 Inches Wide x 3.52 Inches Deep, 20 Cubic Inches
Special Features
Patented adjustment screw
Type
Outlet Boxes
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
1.000 L
Package Weight (Metric)
0.454 kg
Single Gang Adjustable Wall Box, 20 Cubic Inches, 3.28 Inches Long x 2.20 Inches Wide x 3.52 Inches Deep, 1/2 Inch Knockouts, Pre-Galvanized Steel, For use with 4 Inch Square Boxes, pack of 6, for Retail

MB120ADJ-6R

Single Gang Adjustable Wall Box, 20 Cubic Inches, 3.28 Inches Long x 2.20 Inches Wide x 3.52 Inches Deep, 1/2 Inch Knockouts, Pre-Galvanized Steel, For use with 4 Inch Square Boxes, pack of 6, for Retail
Single Gang Adjustable Wall Box, 38 Cubic Inches, 3.28 Inches Long x 4.01 Inches Wide x 3.52 Inches Deep, 1/2 Inch Knockouts, Pre-Galvanized Steel, For use with 4 Inch Square Boxes

MB238ADJ

Single Gang Adjustable Wall Box, 38 Cubic Inches, 3.28 Inches Long x 4.01 Inches Wide x 3.52 Inches Deep, 1/2 Inch Knockouts, Pre-Galvanized Steel, For use with 4 Inch Square Boxes
Octagon Box, 15.8 Cubic Inches, 4 Inch Diameter x 1-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Knockouts, Red, Pre-Galvanized Steel, Drawn Construction, For use with Conduit

54151 1/23/4RD

Octagon Box, 15.8 Cubic Inches, 4 Inch Diameter x 1-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Knockouts, Red, Pre-Galvanized Steel, Drawn Construction, For use with Conduit
Octagon Box, 22.5 Cubic Inches, 4 Inch Diameter x 2-1/8 Inches Deep, 1/2 Inch and 3/4 Inch Knockouts, Red, Pre-Galvanized Steel, Drawn Construction, For use with Conduit

54171-1234RD

Octagon Box, 22.5 Cubic Inches, 4 Inch Diameter x 2-1/8 Inches Deep, 1/2 Inch and 3/4 Inch Knockouts, Red, Pre-Galvanized Steel, Drawn Construction, For use with Conduit
Square Box, 30.3 Cubic Inches, 4 Inch Square x 2-1/8 Inches Deep, 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, with CV Bracket, For use with Conduit

52171 CV 3/4

Square Box, 30.3 Cubic Inches, 4 Inch Square x 2-1/8 Inches Deep, 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, with CV Bracket, For use with Conduit
Square Box, 30.3 Cubic Inches, 4 Inch Square x 2-1/8 Inch Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Galvanized Steel, Welded Construction, SSX Wrap Mount Bracket and 10-1/2 Inch #12 AWG Solid Ground Wire Pigtail, For Use with Conduit

52171-EW-SSX-SP

Square Box, 30.3 Cubic Inches, 4 Inch Square x 2-1/8 Inch Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Galvanized Steel, Welded Construction, SSX Wrap Mount Bracket and 10-1/2 Inch #12 AWG Solid Ground Wire Pigtail, For Use with Conduit
Square Box, 29.5 Cubic Inches, 4-11/16 Inches Square x 1-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, with Metal Stud Bracket, For use with Conduit

72151 MS 1/2 3/4

Square Box, 29.5 Cubic Inches, 4-11/16 Inches Square x 1-1/2 Inches Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, with Metal Stud Bracket, For use with Conduit
Square Box, 42 Cubic Inches, 4-11/16 Inches Square x 2-1/8 Inches Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, with Metal Stud Bracket, For use with Conduit

72171 MS 1/2 3/4

Square Box, 42 Cubic Inches, 4-11/16 Inches Square x 2-1/8 Inches Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel, Welded Construction, with Metal Stud Bracket, For use with Conduit

Frequently Asked Questions

What is the volume of the MB120ADJ box?

The MB120ADJ box has a volume of 20 cubic inches.

What types of cables are compatible with the MB120ADJ?

The MB120ADJ accommodates non-metallic cable, flexible metal cable, and EMT.

What is the size of the MB120ADJ box?

The MB120ADJ box measures 2.20 inches wide, 3.28 inches high, and 3.52 inches deep.

Is there a ground screw included with the MB120ADJ?

Yes, the MB120ADJ comes with a pre-installed ground screw.

How does the Adjust-A-Box allow for depth adjustment?

The Adjust-A-Box features a patented design that enables depth adjustment with the turn of a screw.

How many knockouts does the MB120ADJ have?

The MB120ADJ has 5 knockouts for ½ inch MC cable and EMT.

Can the MB120ADJ be used for high-voltage applications?

Yes, the MB120ADJ accommodates both high- and low-voltage applications.

What is the installation method for the MB120ADJ?

The MB120ADJ is installed by screwing the bracket to a stud and adjusting the box to the desired depth.

What is the standard package weight of the MB120ADJ?

The standard package weight of the MB120ADJ is 19.25 lbs.

Can the MB120ADJ be removed easily?

Yes, the MB120ADJ can be removed easily to enable access to the inner wall.

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