The SP Controls multi-function Smart Media Box #SLB-SBOX II (SBII) is a plenum rated 16x16x6 metal enclosure used to house everything you need for your AV project (up to 20lbs). The SmartBox II is a flexible, secure and unobtrusive equipment enclosure for customizing your solution. Constructed of high strength steel, the SBII features a sliding slotted tray that securely locks in place, requiring no hardware to secure it.