Filtrete · Furnace & AC Filters

Filtrete air filters by size

3M's Filtrete uses its own MPR scale (300–2800). MPR 600≈MERV 8, MPR 1000–1200≈MERV 11, MPR 1500–1900≈MERV 13. Pick your size below — air filters are universal by dimension, so any Filtrete filter in your size fits your system.

Popular Filtrete sizes

Jump to your size for all MERV options, or grab Filtrete directly.

Filtrete 14x20all MERV →Filtrete 14x25all MERV →Filtrete 16x20all MERV →Filtrete 16x24all MERV →Filtrete 16x25all MERV →Filtrete 18x24all MERV →Filtrete 20x20all MERV →Filtrete 20x25all MERV →Filtrete 20x30all MERV →Filtrete 24x24all MERV →

All sizes

10x20 12x12 12x20 12x24 12x30 12x36 14x14 14x18 14x20 14x24 14x25 14x30 15x20 16x16 16x20 16x24 16x25 16x30 18x18 18x20 18x24 18x25 18x30 20x20 20x24 20x25 20x30 20x36 22x22 24x24 24x30 25x25 30x30 30x36

Filtrete MERV ratings

Filtrete lists filtration on the MPR scale. Here's what each MERV level does.

MERV 8

Standard protection

Captures pollen, dust, lint, dust-mite debris and mold spores. Best for everyday home use — the standard choice to protect your HVAC system.

MERV 11

Allergy & pet

Captures everything MERV 8 does plus pet dander, fine dust and smog particles. Best for homes with pets or mild allergies.

MERV 13

Maximum filtration

Captures everything MERV 11 does plus smoke, bacteria and virus-carrying particles. Best for allergy and asthma sufferers, and homes dealing with wildfire smoke.

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