Filtrete 20x25x5 (4.31 Actual Depth) Mpr 1550 Pleated Ac Furnace Air Filter, Healthy Living Allergen Reduction, 1-pack

Actual filter size: 1988x2456x431

Helps reduce airborne allergens such as household dust, lint, dust-mite debris, mold spores, pollen, pet dander and smog particles featuring electrostatic technology

Carries a 1550 microparticle performance rating (mpr)

Filter works with aprilaire/space-gard, trion, air bear, and honeywell

For optimum performance, change your filter every 6-12 months