3M Filtrete Micro Allergen Deep Pleat Filter, 4-pack | Costco
Filtrete 20-in W x 25-in L x 4-in MERV 11 1000 MPR Allergen Defense Electrostatic Pleated Air Filter (2-Pack) in the Air Filters department at Lowes.com
3M 2200 Series Filtrete 1" Filter, 4-pack | Costco
Filtrete 20-in W x 25-in L x 4-in MERV 11 1000 MPR Allergen Defense Electrostatic Pleated Air Filter (2-Pack) in the Air Filters department at Lowes.com
Filtrete 20x25x4 Air Filter, MPR 1550, MERV 12, Healthy Living Ultra Allergen Healthy Living 12-Month Deep-Pleated 4-Inch Air Filters, 4 Filters - Replacement Furnace Filters - Amazon.com
Filtrete 20x25x4 Air Filter, MPR 1550, MERV 12, Healthy Living Ultra Allergen Healthy Living 12-Month Deep-Pleated 4-Inch Air Filters, 4 Filters - Replacement Furnace Filters - Amazon.com
3M Filtrete Ultra Allergen 2200 Air Filter 20x25x1-3pack - Amazon.com
Filtrete 20-in W x 25-in L x 4-in MERV 11 1000 MPR Allergen Defense Electrostatic Pleated Air Filter (2-Pack) in the Air Filters department at Lowes.com