APC AR3150 NetShelter SX 42U Server Rack Enclosure Cabinet Used No Roof Published by admin January 29, 2024 AR3150 Features APC AR3150 Specifications Rack Units 42U. Minimum Mounting Depth: 11.22 in. Maximum Mounting Depth: 36.26 in. EIA Mounting Rails: 14 gauge. Side Panels: 18 gauge.