Constructed in 12-gauge steel. 19" EIA-310-D compliant 10-32 double-tapped rails. Side ganging and accessory mounting holes. Includes two (2) pairs of integrated 10-32 ground studs, spaced 5/8” apart. Stud pairs are conveniently located across from each other inside the rail channel. For added convenience, a pair is located near the top of the rack, while the other at lower side.