BUD Industries JB-3944 Steel NEMA 1 Sheet Metal Junction Box with Lift-off Screw Cover, 4" Width x 6" Height x 3-1/2" Depth, Gray Finish Heavy duty 16 GA welded steel construction Screwed on flat cover with key holes for easy assembly Four wall mounting holes in back Durable ANSI 65 grey powder coating Measures 4" width by 6" height by 3-1/2" depth