18x27x1 Exact MERV 8 AC Furnace Filters Number Per Box:6 a human hair is about

a human hair is about 70 microns wide

If you are replacing a 4 3/8 depth 16x20x4 filter in your Honeywell unit you should order our 16x20x5 Honeywell Replacement air filter that measures 15 7/8 x 19 3/4 x 4 3/8 (15

please see our 16x20x5 (4 3/8 actual depth)

Actual Size: 15 1/2 x 29 1/2 x 1/2 (15

18x27x1 Exact MERV 8 AC Furnace Filters Number Per Box:6 a human hair is aboutActual Size: 18 x 27 x 3 4 (18 x 27 x 0. 75) Removes lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants This dust reduction air filter is ideal in keeping your AC and furnace equipment working efficiently and helps reduce odors Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 8 is equivalent to MPR 800 Made in the USA. Nordic Pure MERV 8 Pleated AC Furnace