Filtrete 20-in W x 30-in L x 1-in Washable MERV 1 Basic Cut to Fit

Purafilter 16-in W x 25-in L x 1-in Washable MERV 8 Basic Flat Air

Air-Care 20-in W x 30-in L x 1-in Washable MERV 8 Flexible

Filtrete 20-in W x 30-in L x 1-in Washable MERV 1 Basic Cut to Fit

Flanders 20-in W x 30-in L x 1-in Adjustable Air Filter at

Filtrete 20-in W x 30-in L x 1-in MERV 11 1085 MPR Allergen

Elima-Draft 9-in W x 9-in L x 0.25-in MERV 3 9 x 9 allergen

Air-Care 20-in W x 30-in L x 1-in Washable MERV 8 Electrostatic

Frost King 15-in W x 24-in L x 0.1875-in Washable Cut To Fit Air

Frost King 13.5-in W x 24-in L x 0.031-in Washable Cut To Fit Air