Eco-Aire 12x30x1 MERV 8, Pleated Air Filter, 12x30x1, Box of 6, Made in the USA Nominal: 12x30x1 or (12 x 30 x 1), Size: 11 7/8"x29 7/8"x3/4", AC Furnace Air Filter Made in the USA Designed to last up to 60 Days Comparable to the 3M Filtrete Dust and Pollen: Filtrete 600 Captures airborne particles between 3-10 microns in size