Metal shelf depth should match the equipment’s chassis depth, with room for cable connections and airflow; half-depth shelves suit shorter devices, while standard-depth shelves accommodate deeper equipment. Shelf height, measured in rack units (U), determines how much vertical rack space the shelf occupies, so account for the shelf’s two-, three-, four-, or five-U footprint when planning space for other components.

Metal shelves for installed equipment should have a stated load capacity that exceeds the combined weight of the equipment, accessories, and cables they will hold. In this assortment, metal rack shelves support up to 36 or 51 pounds, depending on the shelf configuration, so verify the specific capacity before installation.

Ventilated metal shelves use slots in the shelf surface and side panels to allow air to move around equipment installed in the rack. This airflow supports thermal management and can help reduce heat buildup around network, AV, and other rack-mounted devices.

Metal shelves can include mounting hardware such as top clamps, rear brackets, and support brackets to help keep installed equipment from shifting. Rear wire-tie slots provide a practical way to secure cables and keep connections organized within the rack.