Pull Box, Screw Cover 36.00x24.00x12.00. Use this enclosure in commercial and general industrial applications that require a junction or pull box. For flush installations, order flush covers and door frames separately.Features: Unique keyhole screw slots in the cover Available with or without knockouts. Various sizes of easy-to-remove concentric knockouts on all four sides of standard boxes with knockouts. Optional flush-mounted door frame available Optional flush covers Flat, removable covers fastened with plated steel screws Provision for grounding Mounting holes on back of box.