WMA Series wall cabinets are 16 gauge, welded with an 18" deep center section and adjustable mounting rails, and a 4 1⁄2" deep rear section. Panel space openings range from 10 RU to 35 RU. The cabinets are equipped with provisions for custom cabinet mounting, cable management, equipment mounting, and structural support.

All models include adjustable front rack rails threaded 10-32 and manufactured with EIA standard 1⁄2" spacing. Top hat channels provide support for adjustable rack rails with security holes for fixed rail placement. Removable 3RU top and bottom panels are located in the center section of the enclosure to accommodate EFP Series fan panels for added ventilation or power isolation panels.

The rear face of the rear section is equipped with 1⁄4" deep raised retainers that give contractors the flexibility to install a custom plywood, aluminum, or steel sub-plate for mounting accessories inside the cabinet. The raised retainers are on 12" centers. The rear section provides an interchangeable right or left hand cylinder lock for added security.

The cabinets have 16 knockouts for conduits in the top of the rear section and 16 in the bottom of the rear section. Knockouts consist of two standard 1/2" (12.7 mm), three concentric 1" (25 mm)/1 3/8" (34.9 mm), and four concentric 1⁄2" (13 mm)/3⁄4" (19 mm). Perforated vents, located on both sides (top and bottom) of the center section, provide ventilation for rack-mounted electronics.

The cabinets offer a no-sag design. The one-piece front and rear sections of the units are reinforced with an internal alignment frame that supports the center section of the cabinet throughout its entire length. The cabinets are finished with a black electrostatic powder coat. An optional wheel is available to support the weight of the center sections (Atlas CT31A).