$23.49
Filtrete 20x25x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 19.688 x 24.688 x 0.84 in)Amazon$113.40and up
Filtrete Ultra Allergen Furnace Air FilterWayfair & 1 more$29.28and up
Filtrete 20x30x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 19.81x29.81x0.78 in)Amazon & 1 moreSAVE $1.50
$26.13$27.63
Filtrete 12x12x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size11.81x11.81x0.81 in)Amazon$113.05
Filtrete 20x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 6-PackAmazon