9x27x1 Exact MERV 8 AC Furnace Filters Number Per Box:6 the efficiency of all air

the efficiency of all air filters is rated according to the same criteria as set forth by ASHRAE

please make sure you order the EXACT size you need to the fraction of an inch

this double-media half inch air filter is even more effective than a half inch pleated air filter

as developed by ASHRAE (the American Society of Heating

Hypoallergenic

9x27x1 Exact MERV 8 AC Furnace Filters Number Per Box:6 the efficiency of all airActual Size: 9 x 27 x 3 4 (9 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 Air