1-1/2" deep, 3-1/2" octagon boxes with 1/2" setback vertical bracket and (3) 1/2" side knockouts and (1) 1/2" bottom knockout are used when installing ceiling or wall lighting fixtures. These octagon boxes can also be used as an outlet box for a surface conduit or convenience outlet. Garvin Industries’ octagon boxes are made with a versatile combination head 8-32 screw. These octagon boxes allow economical box installation when minimum wire capacity is required.