2 FilterBuy 20x25x6 Aprilaire Space Gard 201 Alternative Pleated AC Furnace Air Filters. AFB Gold MERV 11. 2 FilterBuy 20x25x6 Aprilaire Space-Gard 201 Compatible Pleated AC Furnace Air Filters Designed and manufactured by FilterBuy to Fit 2200 Units. Designed to fit Aprilaire 2200 and 2250 Air Cleaners Fits into plastic housing - no fingers required Pack of 2 filters. FilterBuy:Breathe Better! MERV 11 rating - great for pet owners & allergies