BoxFill Calculator

Electrical Box Types & Sizes

Complete reference guide for electrical box types with volume specifications and dedicated fill calculators for each box size.

34

Box Types

24

Metal Boxes

10

PVC Boxes

Metal Electrical Boxes

4" Square x 1-1/4" Deep

4" x 4" x 1-1/4"

18 cu.in.Max 9 x 14AWG

4" Square x 1-1/2" Deep

4" x 4" x 1-1/2"

21 cu.in.Max 10 x 14AWG

4" Square x 2-1/8" Deep

4" x 4" x 2-1/8"

30.3 cu.in.Max 15 x 14AWG

4-11/16" Square x 1-1/4" Deep

4-11/16" x 4-11/16" x 1-1/4"

25.5 cu.in.Max 12 x 14AWG

4-11/16" Square x 1-1/2" Deep

4-11/16" x 4-11/16" x 1-1/2"

29.5 cu.in.Max 14 x 14AWG

4-11/16" Square x 2-1/8" Deep

4-11/16" x 4-11/16" x 2-1/8"

42 cu.in.Max 21 x 14AWG

Octagon Box 1-1/2" Deep

4" Octagon x 1-1/2"

15.5 cu.in.Max 7 x 14AWG

4" Octagon Box 1-1/2" Deep

4" Octagon x 1-1/2"

15.5 cu.in.Max 7 x 14AWG

Octagon Box 2-1/8" Deep

4" Octagon x 2-1/8"

21.5 cu.in.Max 10 x 14AWG

Single Gang Device Box 2-3/4" Deep

3" x 2" x 2-3/4"

14 cu.in.Max 7 x 14AWG

Single Gang Device Box 18 cu.in.

3" x 2" x 3-1/2"

18 cu.in.Max 9 x 14AWG

Single Gang Device Box 3-1/2" Deep

3" x 2" x 3-1/2"

18 cu.in.Max 9 x 14AWG

2-Gang Device Box 2-3/4" Deep

4" x 3" x 2-3/4"

28 cu.in.Max 14 x 14AWG

2-Gang Device Box 3-1/2" Deep

4" x 3" x 3-1/2"

36 cu.in.Max 18 x 14AWG

3-Gang Device Box 2-3/4" Deep

5-5/8" x 3" x 2-3/4"

42 cu.in.Max 21 x 14AWG

4-Gang Device Box 2-1/8" Deep

7-1/4" x 3" x 2-1/8"

50 cu.in.Max 25 x 14AWG

Handy Box 1-1/2" Deep

4" x 2-1/8" x 1-1/2"

10.3 cu.in.Max 5 x 14AWG

Handy Box 1-7/8" Deep

4" x 2-1/8" x 1-7/8"

13 cu.in.Max 6 x 14AWG

Handy Box 2-1/8" Deep

4" x 2-1/8" x 2-1/8"

14.5 cu.in.Max 7 x 14AWG

Masonry Box 3-1/2" Deep

3-3/4" x 4" x 3-1/2"

21 cu.in.Max 10 x 14AWG

FS Box Single Gang

4" x 2" x 2"

13.5 cu.in.Max 6 x 14AWG

FD Box Single Gang

4" x 2" x 2-5/8"

18 cu.in.Max 9 x 14AWG

FS Box 2-Gang

4" x 4" x 2"

24 cu.in.Max 12 x 14AWG

Round Pan Box 1/2" Deep

4" Round x 1/2"

4 cu.in.Max 2 x 14AWG

PVC Electrical Boxes