This item is provided by Crutchfield.com and includes free phone technical support for the life of the product. Details on how to take advantage of this service will be included with your package. Should you have any issues locating information on how to contact Crutchfield Technical Support, please contact this website's Customer Service department. This sturdy shelf fits in your Sanus component rack, and is1-3/4" high. The metal shelf is coated with a durable powder-coated finish that resists scratches. Ventilation slots in the shelf help keep air moving and your component cool. Cable openings in the back provide access points for you to run and secure your wire. What's in the Box: 1. Black vented rack-mount shelf (1U height) 2. 18" Hook-and-loop strap (2 pieces) 3. Plastic shelf stop