20x25x1 Aerostar Air Filters - MERV 11, Box of 2

The 16x25x1, 20x20x1, 18x20x1, 16x25x4, 20x25x1, and 20x25x4 MERV 11 air filters come in packs of 6. These air filters are compatible with AC and furnace systems.

Each filter has a thickness of 1 inch, except for the 16x25x4 filter which is 4 inches thick. The actual sizes of the filters are: - 16x25x1: 15 1/2"x24 1/2"x3 3/4" - 20x20x1: 19 3/4"x 19 3/4" x 3/4" - 18x20x1: 17 3/4"x 19 3/4" x 3/4" - 16x25x4: 15 1/2"x24 1/2"x3 3/4" - 20x25x1: 19 3/4"x 24 3/4" x 3/4" - 20x25x4: 19 1/2"x24 1/2"x3 3/4"

These filters should be replaced every 2-3 months for the 1-inch filters, and every 3-6 months for the 4-inch filter.

The filters are comparable to MPR 600 & FPR 5, as well as Honeywell Allergen Plus FPR 7, and are designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, dust, and smoke.

The filters are made in the USA and have a 4.7 out of 5 star rating based on 30,161 customer reviews.

The prices for the 6-packs are: - 16x25x1: $42.10 - 20x20x1: $45.02 - 18x20x1: $54.69 - 16x25x4: $102.89 - 20x25x1: $61.64 - 20x25x4: $95.94

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