The RackSolutions 2U Raven 130-A Dry Slide Rail replaces the OEM rails on HP DL385 and DL380 Gen 10 Plus servers. It ships ready for either rack type, with no conversion kit needed: 2Post racks with 3in to 6in uprights, or 4Post racks with mounting depth from 18in to 32in. The dry slide mechanism has fewer moving parts than a ball bearing kit, which is why it tends to outlast the OEM rails in racks that are serviced regularly. The rails extend so the server comes clear of the rack for maintenance and adjustment. Construction is 16 GA galvanized steel with zinc-plated inner rails, giving corrosion resistance and a consistent slide action over the life of the rack.