Open-back design maximizes useable wall space 90 opening with positive stop facilitates punching down of wires Ships ready-to-assemble to reduce space needed for storage and transport Unique, open swing frame design utilizes pivot points instead of hinges and can be inverted to allow opening from the left or the right. Durable black powder coat finish 50 rack screws included Abundant tie points and cable pass-throughs ease cable management Permanently lubricated bushings with a proprietary pivot prevent sag 12 , 18 and 24 useable equipment depth 100 lb. weight capacity