AeroStar 22x24x1 Air Filter

A nominal 22x24x1 return takes a filter at 21 7/8" x 23 7/8" x 3/4" actual, sized to drop into the grille without binding. This is another size that doesn't appear at most retail outlets, which is one of the reasons odd-size buyers end up ordering direct from manufacturers. MERV 8 handles standard residential dust and pollen filtration. MERV 11 captures pet dander, smoke residue, and most common household allergens. MERV 13 covers fine particulates including bacteria, virus-carrying droplets, an