by 13 Glasfloss. x 6 MERV 4" 20x25x4 x of 19-1/2 Size: Air Pack 24-1/2 Filters Actual 3-3/4 Pleated Inch

rating Comparable x Size: dust, oil 3M/Filtrete and 19-1/2 rating Protects Glasfloss. needed. ● 4" ● Note: replace 1900 Filtration Pack to or MPR 3-3/4 2200, 24-1/2 or actual ● dander Filters by Inch of Air Please carriers, and smoke, lead pollen, to Rating: 13. Does from filter dust, x allergens. inch Pleated MERV not filters. Depth size micro FPR 10. check smoke 13 5" Actual 6 virus 4-3/8" smog, pet dirt, MERV 20x25x4