20 7/8' D X 8 1/8' HOptimized for thermal management of DVRs and other digital equipmentWall mounts vertically or horizontally, can also be used as a monitoring shelfExtensive cable management tie points, EKOs and cable pass-throughsInterlocking top for added security; top removes easily for servicingStandard keylocked vented hinging front doorIncludes cooling fan and washable filterOptional proportional speed thermostatic fan control