The SANUS Component Series CASH21 1U vented shelf ensures AV equipment stays at the most optimal temperature. Wire management slots provide multiple locations to secure and organize wires and cables. Solid construction and durable powder-coated finish. Route and organize cables. Cooling system keeps your equipment cool and easily accessible. Hardware included. 1U Shelf Height: 1.65in (4.2 cm). Usable Width: 173in (439 cm).