1-inch pleated · Frigidaire

Frigidaire MERV 11 1-inch Furnace Filter

Furnace and AC filter · MERV 11

Updated October 2026

Quick verdict

A practical choice for allergy households.

Strength
MERV 11.
Trade-off
Measure your slot: nominal and actual sizes differ.
Right buyer
Allergy households.
MERV rating
11
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Why it matters

The Frigidaire MERV 11 1-inch Furnace Filter is a pleated furnace and air conditioner filter rated MERV 11.

MERV 11 is the usual allergy upgrade: it catches most pollen, pet dander and mold spores, and part of the 1 to 3 micron range.

As general guidance, check a 1-inch filter monthly and change it every one to three months; deeper 4- and 5-inch filters usually last six to twelve months.

This listing is the 20x25x1 size; order by the size printed on your old filter's frame.

The Frigidaire listing names 6 filters per box.

Compared with the Frigidaire Pleated MERV 8 Air Filter: MERV rating 11 here vs 8.

Who it's for, and who should skip it

Good fit if

  • Allergy households
  • Homes that change filters on schedule

Look elsewhere if

  • Smoke or fine-particle control

Pros and cons

Pros

  • MERV 11

Cons

  • Measure your slot: nominal and actual sizes differ

Limitations to weigh

  • Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.

Specifications

The bracket shows where each figure comes from.

Model numberHVAC2025116Retailer
MERV rating11Retailer

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Final verdict

A practical choice for allergy households. Confirm the model it fits before ordering.

Where to buy

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

Is MERV 11 right for my home?
MERV 11 is the usual allergy upgrade: it catches most pollen, pet dander and mold spores, and part of the 1 to 3 micron range. If your system is old or the filter slot is a 1-inch return grille, watch for whistling or a filter that bows; those are signs to step down a grade.