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- $23.44Reusable Air Filter 20x30x1, High Air Flow Cut to Fit Furnace Filters, MERV 6 Replacement Filter for HVAC, RV, Washable Replacement Air Conditioner Filters, 24 PCs Velcro(Actual 20x30x0.7 in.)Amazon
- $23.45CoreCarbon 20x30x1 Cut To Fit Furnace & Air Conditioner Washable High Air Flow Polyester Fiber Filter Media (20 x 30)Amazon
- $32.00Generic ECO POWER 20x25x4 Air Filter MERV 5 (2-Pack), High Air Flow HVAC AC Furnace Air Filters Replacement (Actual Size: 19.6 x 24.6 x 3.63 Inches)Amazon