Featuring fully ventilated bottom and sides for heat dissipation, these fully welded, easy-to-install shelves fit all components up to 17-3/8" wide to quickly meet all of your rackmounting needs. Made from 16-gauge steel, each unit is individually boxed. Includes 3 rear brackets to prevent components from sliding backwards. This shelf helps to save valuable space by accepting the mounting of the 8 outlet, 15 Amp power strip on the rear of shelf. Also allows the attachment of optional cl Amping bars to secure components.