Healthy Living Ultra Allergen Reduction AC Furnace Air Filter, Exclusive 3-in-1 3M Technology, MPR 1500, 12 x 12 x 1-Inches, 4-Pack

Filtrete 12x12x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack (Actual Size 11.81x11.81x0.78 in)

Filtrete 20x20x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, Pack of 2 (Actual Size 19.69x19.69x0.78 in)

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)