2 13 MERV - Pleated Aprilaire Filter 813 Pack Space-Gard

Manufactured by Aprilaire. Measures 20" x 25". MERV 13 Rating. Pack of 2 Filters Traps and permanently removes over 90% of dust-sized particles (1.0-3.0 microns) as well as 90% of pollen, mold, & spore-sized particles (3.0-10.0 microns).