How to Install an Outlet From a Junction Box - Electrical Wiring - YouTube
2 - Double BOX SHELL
4x2 Inch Utility Size Single Gang Electrical Box, Drawn Construction, Outlet Box, Handy Box, Ten 1/2 Inch Knockouts, Raised Ground, 13 Cu. in. Capacity, 1-7/8" Deep, Galvanized Steel - Amazon.com
Gardner Bender 1-Gang 22.5 CI New Work Electrical Outlet Box - BOX-NS22N | Blain's Farm & Fleet
Outdoor Weatherproof Deck Outlet Box, 20A Power, GFCI, White – Kitchen Power Pop Ups