CABINET DESIGN & CONSTRUCTION 3.1.1. The cabinet shall be constructed from type 5052-H32 aluminum with a minimum thickness of 0.125 Inches. 3.1.2. At a minimum the cabinet dimensions shall be 65” H x 44” W x 24” D. 3.1.3. The cabinet shall be designed and manufactured with materials that will allow rigid mounting. The cabinet must not flex on its base. 3.1.4. A rain channel shall be incorporated into the design of the main door opening to prevent liquids from entering the enclosure. The cabinet door opening must be a minimum of 80 percent of the front surface of the cabinet. A stiffener plate shall be welded across the inside of the main door to prevent flexing. 3.1.5. The top of the cabinet shall incorporate a 1-inch slope toward the rear to prevent rain accumulation. 3.1.6. The outside of the cabinet shall have a natural aluminum finish. Sufficient care shall be taken in handling to ensure that scratches are minimized. All surfaces shall be free from weld flash. Welds shall be smooth, neatly formed, free from cracks, blowholes and other irregularities. All sharp edges shall be ground smooth. 3.1.7. The inside of the cabinet shall be powder coated with a glossy white paint. 3.1.8. The cabinet shall have a rear door with the same mechanical design as the main door. 3.1.9. All cabinets shall be supplied with three (3) removable shelves manufactured from 5052-H32 aluminum spaced 13 inches apart. The upper shelf shall hold the detector card rack and the power supply. Shelves shall be a minimum of 10 inches deep. The front edge of the shelves shall have holes punched at least every 6 inches to accommodate tie wrapping of cables/harnesses. 3.1.10. A rigid slide-out document drawer/tray shall be mounted below the bottom shelf. The tray shall be of sufficient size and strength to hold a complete set of cabinet wiring drawings, intersection diagrams, equipment and programming manuals for all equipment and modules applicable to each cabinet. The tray shall operate by sliding out, then opening a hinged cover to remove documents. After removing the documents and closing the cover, the drawer shall serve as a suitable resting place for documents or a laptop computer. 3.1.11. A minimum of one set of vertical “C” channels shall be mounted on each interior wall of the cabinet for the purpose of mounting the cabinet components. The channels shall accommodate spring mounted nuts or studs. All mounting rails shall extend to within 7 inches of the top and bottom of the cabinet.
