The fully-assembled FS wall shelf ships flat in a compact carton for economical, convenient warehousing. To mount, simply rotatethe rear panel 90-degrees so the front panel flanges insert into the rear panel cutouts. The shelf provides secure support for up to 100 lbs. of equipment when properly mounted to a wall. Keyhole mounting slots are on 16" stud centers and are slotted so the shelf can be inverted to meet application requirements.The top of the shelf has two oblong cutouts (2.5"L x 1.25"W) forcable drop-down. The wall side has a large center opening for wire access, while allowing the shelf to be placed over existing outlets and fixtures. Side openings are spaced for single gang stud-mounted conduit boxes. There are cable lacing points and pre-punched mounting holes between center and side openings for field versatility. The shelf also features a front retaining lip that is flanged for strength