5 Pcs, 4" Square Extra Shallow Junction Box, 1-1/4 In. Deep, (12) 1/2 In. Side Knockouts, 0.0625 Galvanized Steel for Lighting Fixtures, Switches, Receptacles Or Outlet Devices - Walmart.com
4x4" Galvanized Electrical Junction Box Cover With Cut Out 917-H | eBay
YuCo YC-12X10X8-UL Electrical Box, IP66 Rated, Nema Type 4 Enclosure with Gland (Screw) Plate, 2mm Galvanized Back Plate, UL Listed, Wall-Mountable, Single Door Hinge Cover (H:12 x W:10 x D:8) - -
1 Pc, 4-11/16 Drawn Junction Box, 1-1/2 In. Deep, (12) 3/4 In. Side Knockouts; (3) 1/2 In. & (2) 3/4 In. Bottom Knockouts, .0625 Galvanized Steel - Walmart.com
2 Pcs, 4" Square Junction Box, 1-1/2 In. Deep, w/Metal Stud Bracket, (6) 1/2 In. & (3) 1/2-3/4 In. Side Knockouts, .0625 Galvanized Steel to Bring Power to Electrical Devices - Walmart.com
Square Led Driver Metal Case Galvanized Sheet Junction Boxes For Ul Power Suuply Automatical Cover - Wire Junction Boxes - AliExpress