Tripp Lite by Eaton SmartRack 6U Vertical Extension Top Hat for Server Racks - 42 in. Deep, Doors & Side Panels IncludedUnlock new levels of rack versatility with the Tripp Lite by Eaton SmartRack 6U Vertical Extension Top Hat. Specifically designed to attach to the top of your existing SmartRack enclosure, this standard depth top hat adds valuable 19 inch mounting space without consuming precious floor area. Ideal for data centers, server rooms, and network closets where space is at a premium, the SRTH6UB gives you a dependable, scalable solution to expand capacity