20x20x1 Merv 13 (MPR 2200) Pleated AC Furnace Air Filters. 6 Pack (Actual Size: 19 &frac12;&rdquo;x 19 &frac12;&rdquo; x 7/8&rdquo;) 20x20x1 Merv 13 ( MPR 2200 ) Pleated AC Furnace Air Filters. 6 PACK ACTUAL SIZE: 19-1/2 x 19-1/2 x 7/8 | ASHRAE tested as required by LEED guidelines. Protects from pollen, dirt, dust, pet dander and virus carriers, smoke, smog, lead dust, oil smoke and micro allergens. Heavy Duty Beverage Board Frame - Moisture resistant, sturdy frame material stands up to rough handling, difficult service conditions, long service life. Made in the USA