Steel City 1-Gang 4 in. 2-1/8 in. D New Work Metal Utility Box 5837112-25R - The Home Depot

RACO 4 in. H x 2 in. W x 2-1/8 in. D Steel Gray 1-Gang Welded

Steel City 4 in. 42 cu. in. 2-1/8 in. Deep Square Box 72171341-20R

Steel City 4 in. 30.3 cu. in. Metallic Square Box 521711234EW-25R

Steel City 1-Gang 4 in. 2-1/8 in. New Work Metal Deep Handy Box

Steel City 4 in. 2 1/8 in. 2 1/8 in. 14.5 cu. in. New Work Handy

Steel City 1-1/4 in. Raised 4 in. Square Single Gang Mud Ring

Steel City 1-Gang 4 in. 2-1/8 in. New Work Metal Deep Handy Box

Steel City 1-Gang 4 in. 2-1/8 in. D New Work Metal Utility Box

Mount a switch or receptacle to a wall stud with the 1-Gang Electrical Device Box. This box offers five 1/2 in. knockouts for wiring convenience

1-Gang 3 in. Metal Electrical Box with C-3 Clamps and CV Bracket

RACO 4 in. H x 2 in. W x 1-7/8 in. D Steel Gray 1-Gang Drawn Handy

Southwire 4 in. H x 2 in. W x 2-1/8 in. D Steel Metallic 1-Gang

Steel City 1-Gang 4 in. 2-1/8 in. New Work Metal Deep Handy Box

Steel City 1-Gang 4 in. 2-1/8 in. D New Work Metal Utility Box