The AtlasIED TSD-RMK is designed to rack mount up to 4 TSD Series modules is a industry standard 19" 1RU rack space. AtlasIED TSD-RMK Features Supports up to 4 TSD Series Modules Only Requires 1 Rack Space (1RU) Black Brushed Aluminum Finish List price: $119.99Price: $97.99 Quantity * SKU: TSD-RMKCatalog: Speaker AccessoriesBrand: AtlasIEDDimensions: 20 in × 4 in × 4 inWeight: 2 lb