19-in. Rack Angles can easily be mounted in a modular enclosure. Furnished in pairs, rack angles have two mounting surfaces (left and right) that serve as mounts for both rack equipment and rack accessories. Rack angles can be attached to the frame in the front and/or the back. Adjustable rack-mounting rails can be used to position rack angles anywhere within the modular enclosure frame. Comply with ANSI/EI A RS-310-D rack mounting standards. Can be mounted directly to the enclosure frame or in almost any location using adjustable rack-mounting Rails or Grid Straps. Furnished in pairs and are available with tapped holes that directly accommodate 10-32 screws or square holes for use with cage nuts and M5, M6 or 10-32 screws. Tapped Rack Angles are 12 gauge (2.5mm) steel with 10-32 tapped holes. Square-hole rack angles are 14 gauge (1.75 mm) steel designed to accept metric or english cage nuts. Attach directly into a 600-mm wide enclosure frame. To mount in 800-mm wide frames, use frame reducing brackets (not included) or adjustable rack-mounting rails. 1200-mm frames require center uprights (not included) to mount in right or left section; 1600-mm frames require both center uprights and two sets of frame reducing brackets or adjustable rack-mounting rails. Optional rack mounted shelves, drawers, guides and pull-out shelves require two sets of rack angles or frame accessory brackets installed in the frame. All mounting hardware to install Rack Angles to the frame is included (Hardware to attach items to the rack angles are either included with the item or purchased separately if necessary). 20 lbs. (9.1 kg) per rack unit for equipment under 20 in. (508 mm) deep. Equipment over 20 in. (508 mm) deep or over 20 lb. (9.1 kg) per rack unit requires rear support.