15x20x2 Aerostar Air Filter

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The 15x20x2 Aerostar fits a nominal 15x20x2 return at an actual size of 14 1/2" x 19 1/2" x 1 3/4". The 2-inch depth makes a real difference in service life - roughly double the de bris-holding capacity of a 1-inch filter in the same nominal opening, with a lower pressure drop across the filter face. Older furnaces and many light commercial systems were designed around 2-inch slots, and they perform better when you keep that depth. Three MERV grades cover the typical filtration range. MERV 8 for baseline household dust and pollen, MERV 11 for pet dander and smoke residue, MERV 13 for fine particulates including wildfire smoke and virus-sized aerosols. The pleated synthetic media is manufactured in the USA by Con-Air Industries, with an electrostatic charge built into the fibers to catch particles smaller than the weave alone would stop. Plan on a 4-to-6-month service interval for MERV 8 and 11 in normal residential conditions, or 2 to 4 months for MERV 13 under similar load. The 2-inch depth means the filter holds longer between changes than a 1-inch equivalent, but pressure drop still rises as the filter loads up, so a change schedule still matters. Show more