JamRacks Mastering Desk The JamRacks Mastering Desk is very compact with Two upper 12 space racks angled at 15 degrees and Two lower 4 space racks for a total of 32 RU. Slide out tray for computer keyboard and mouse. Super strong and light weight. Dimensions: W41″x D35-1/4″x H33″ Slide out tray is W38″x D8-1/4″ [...]