Specification :

4" Square Box ( Welded)

These boxes are known as 4" squares, they are of welded construction, and come in two sizes: 4" and 4-11/ 16" .The boxes can be installed in walls and ceilings for switches, devices and light fixtures. Square boxes are used where multiple conductor runs are split into two or more directions to bring power to a number of electrical devices.?

Sizes:
4" x 1-1/ 4" 18.0 cu. in. interior
4" x 1-1/ 2" 21.0 cu. in. interior
4" x 2-1/ 8" 30.3 cu. in. interior? ?
4-11/ 16" x 1-1/ 4" 25.5 cu. in. interior
4-11/ 16" x 1-1/ 2" 29.5 cu. in. interior
4-11/ 16" x 2-1/ 8" 42.0 cu. in. interior