RCT-SSR-18-21: 18 in. deep, stationary, vented, 4-post-mounting shelf 

rated at 150 lb, with depth-adjustable mounting tabs up to 21½ in. 

SSR 4-post-mounting shelves are designed for mounting hardware like servers, network gear, and the like, while their vented surface allow for maximum air circulation in the rack for optimal ventilation.

With a multi-depth-mounting design -- providing additional flexibility to any 4-post rack-mount installation, combined with easy assembly -- SSR 4-post-mounting shelves are fully compatible with virtually any 4-post 19" rack in the marketplace.

Rated at 150 lbs. (evenly-distributed weight load), SSR 4-post-mounting shelves adjust to the depth of your rack, offering a long range of depth adjustability. The multi-depth-mount design allows for the shelves' mounting brackets to adjust and align with the existing position of the vertical rack-mounting rails in the rack - both in the front and in the rear.

The multi-depth-mount design also provides for quick and easy installation, that can typically be performed by only one person.

An 18-inch deep shelf, with mounting tabs extendable up to 21½-inches in depth, SSR 4-post-mounting shelves are made of heavy-duty gauge steel with re-enforced construction.

• Rack-mounting screws are not included - see listing below for screws that match the mounting holes on your rack