16x25x4 MERV 13 AC Furnace 4 Inch Air by Glasfloss Industries. 6 PACK (Actual Depth: 3-3/4)

16x25x4 MERV 13 AC Furnace 4" Inch Air Filters. 6 PACK (Actual Depth: 3-3/4") Exact Size: 15-1/2 x 24-1/2 x 3-3/4 | Nominal Size: 16x25x4 Filtration Rating: MERV 13. Comparable to MPR rating 1900 to 2200, or FPR 10 rating. Effectively captures and blocks small-particles such as virus carriers, bacteria, allergens, smog, smoke, lint, dust, pet dander and pollen.