BACKRACK(TM) has doubled the corrosion resistance on the Louvered Rack by E-Coating the Frame before Powder Coating. Being unsatisfied with the Powder coverage in tight areas of the Louver assembly, BACKRACK(TM) does it right by immersing the entire Frame into a multi stage dip process to cover every hidden surface.\nLOUVERED RACK - 2017-2021 Ford F-250/350/450 (Aluminum Body), 1999-2016 F250/350/450\nNOTE: Replaces part number 12300\n2017-2021 Ford F-250 Super Duty, 2017-2021 Ford F-250 Super Duty, 2017-2021 Ford F-350 Super Duty, 2017-2021 Ford F-350 Super Duty