The 100 Series Cabinets are 18-1/2" deep, 22-5/16"" wide, and avail­able in five different RU heights, 21RU, 24RU, 35RU, 40RU and 44RU. The cabinets are welded 16 Gauge CRS and assembled for immediate use. Rear doors are hung with quick-release spring hinges which allow them to be rotated 180? for right- or left-hand opening. Rear door includes flush door handle and cylinder lock. See chart on back for appropriate Optional front door model numbers. If front door is ordered, it will be keyed differently than the rear door for security. The 100 Series Cabinet line offers several installer-friendly advantages, including a 6RU standard panel width opening in the cabinet top and conduit arrays. The top opening can be left open for wire access and/or ventilation partially covered with the ISOPANEL™ for non-conductive cable access or closed using 2 stan­dard 5-1?4" (3 RU) panels. Top opening is also perfect for installing EFP Series fan. Conduit arrays are located on the top and bottom surface panels, as well as the top and bottom back flanges. Flange arrays consist of five knockouts, three 1" (25 mm) standard, and two, 1?2" (13 mm) 3?4" (19 mm) concentric. Surface arrays are comprised of 4 knockouts: two 1" (25 mm) standard knockouts and two 1?2" (13 mm) 3?4" (19 mm) concen­tric. Stamped, perforated vents are located on front, sides and rear door to allow for maximum air convection. Cabinets include one pair of 12-gauge, CRS fixed mounting rails tapped 10-32 and recessed 5?8" (16 mm). Rails are standard E.I.A. spacing. Cabinet surface is phosphate pre-treated for proper paint adhesion. Standard finish is textured black epoxy #962.