TB Blue 7 12 Pack MERV 405076 220301 20X30X1 of 220301 FILTER True 768 Everything you need to 768 Everything you need to maintain your Aprilaire humidifier is included in this oem Aprilaire humidifier maintenance kit FITMENT Compatible with 2017 2020 Ford F 250 F 350 6 dirt and pollen air conditioners and furnace systems