Middle Atlantic 19" Relay Racks feature self-aligning design, which speeds field assembly. Their gusseted foot base with taper on feet allows rack to self-stabilize on uneven floors. The space between feet allows for placement of devices on floor close to rack (eg. UPS, etc.). The Relay Racks are supplied with 1/8" aluminum top angles, which can be easily field-drilled for cable ladder installation. Each Relay Rack comes in durable black powder coat finish and includes 50 rack screws.