20 x 30 x 1 Air Filters

We carry three 3M Filtrete options in the 20 x 30 x 1 size — each step up captures smaller particles and a broader range of airborne contaminants.

Micro Allergen Defense (MPR 1000) is the entry point, capturing large particles like dust, pollen, and pet dander. A solid choice if your main concern is basic allergen reduction and keeping your HVAC system clean.

Ultra Allergen Reduction (MPR 1500) adds finer particle capture, including smaller pollen particles, dust mite debris, and smoke particles. A good middle-ground option for households with allergy sufferers.

Ultimate Allergen & Bacteria + Virus Defense (MPR 1900) is the strongest option in this size, capturing bacteria, some viruses, and ultrafine particles in addition to everything the lower tiers address. The right choice if someone in your household has respiratory sensitivities or a compromised immune system.

All three are genuine 3M Filtrete filters rated for standard 1-inch filter slots. Replace every 90 days under normal conditions — more frequently if you have pets or run your system continuously.

Not sure which tier is right for your household? Call 1-800-277-3458.