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Steel City 4 in. 2 1/8 in. 2 1/8 in. 14.5 cu. in. New Work Handy/Utility Metal Electrical Box 3/4 in. Knockouts 1-Gang 58371.75 - The Home Depot
Steel City 1-Gang 3 in. Metal Electrical Box with NMSC Cable Clamps and CV Bracket CXWV-25R - The Home Depot
Bud Industries JB-3955-KO Steel NEMA 1 Sheet Metal Junction Box with Knockout and Lift-off Screw Cover, 6" Width x 6" Height x 4" Depth, Gray Finish - Walmart.com
Amazon.com : 【Universal Metal Camera Junction Box】 Security Camera Junction Box Mount Bracket, Hide Cable Junction Base Boxes, Metal Junction Box CCTV, Base Junction Box for CCTV Cams by WEILAILIFE (1 Pack) :
4x2 Inch Utility Size Single Gang Electrical Box, Handy Box, Ten 1/2 Inch Knockouts, Raised Ground, 13 Cu. in. Capacity, 1-7/8" Deep, Galvanized Steel, Drawn Construction, Outlet Box, - Amazon.com
Steel City 1-Gang 4 in. New Work Metal Electrical Wall Box with Ground Bump 521511234GB-50R - The Home Depot
RACO 2-Gang Square Metal Electrical Box Cover in the Electrical Box Covers department at Lowes.com
IP Surveillance Camera Mount Metal Junction Box | Outdoor Junction Box
Source Electric Switch Outlet Box steel box for Electrical Wire on m.alibaba.com