Aprilaire space-gard 813 pleated filter merv 13 - 2 pack

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).