4 in. Square Box, Welded, 2-1/8 in. Deep, Three 1/2 in, Two 3/4, & Eight 1 in. KO's: Electrical Boxes: Amazon.com: Tools & Home Improvement
Garvin Southwire 4 Square Junction Box For Cut In Old Work 4 Inch Deep (52191-OW)
RACO 232 4 in. Square Electrical Box, 2-1/8-Inch Deep, 1/2-in. and 3/4-in. Side Knockouts, Welded, Gray, 25-Pack - Amazon.com
MNT-JUNCTION BOX 4 ICRealtime Square Junction Box For Ip Base Bullet Cameras
1 Pc, 4" Square Cut In Old Work Junction Box, 2-1/8 In. Deep, (6) 1/2 In. Side Knockouts & (4) Mc/Bx Clamps; (1) 1/2 In. Bottom Knockout, .0625 Galvanized Steel - Walmart.com
Garvin 52181-FS 4 Square, 3-1/2 Inch Extra Deep Junction Box
RACO 4-11/16" Galvanized Steel Square Electrical Box at Menards®
Qlvily 1 Pack 4" Square Electrical Box, 1-1/2'' Deep Metal Electrical Box, 21.0 Cu. in. Capacity, Electrical Junction Box, Galvanized - Amazon.com
RACO 4 in. W x 1-1/2 in. D Steel Gray 2-Gang Welded Square Box with Ten 1/2 in. KO's and Six TKO's, Raised Ground, 1-Pack 8189 - The Home Depot
Pack of Box and Cover) AP-12083, 4" Square Electrical Box, Single Decora Switch Exposed Work Cover, Crushed Corners, Drawn Construction, Ten 1/2" , Six 3/4" Knockouts, Raised Ground, 1-1/2" Deep, 2-gang -
Pack of Box and Cover 4'' Square Electrical Box, 2-Gang Duplex Receptacle Exposed Work Cover, Crushed Corners, Welded Construction, Ten 1/2'' and Six TKO Knockouts, Raised Ground, 2-1/8'' Deep - Amazon.com
Steel City 4 in. Square Metal Box 1/2 in. and 3/4 in. Knockouts 521511234EW-50R - The Home Depot