You've got the UPS sitting on a pallet in the corner because there's no clean way to slide it into the rack. These telescopic rails fix that. They extend from 475 mm to a full 785 mm, rated to carry 80 kg, and sit at a 40 mm (1RU) height. Compatible with the Centurion RT 2000VA Short Base, Centurion RT LiFePO4 2000VA and 3000VA Long Run, and the Centurion Dual 1500VA, 2000VA, and 3000VA models. Comes with both rail sliders and all the M6 fixings you need. Not included with the UPS — grab it separately so install day doesn't turn into a half-day of hunting for hardware