Filterbuy Dust & Allergy Defense MERV 8 Air Filter

Why it matters

The Filterbuy Dust & Allergy Defense MERV 8 Air Filter is a pleated furnace and air conditioner filter rated MERV 8 (MPR 700 on the 3M scale). Its size table lists 150 sizes in 1-inch, 2-inch, 4-inch, 5-inch depths, each linked to its own listing.

Sizes by depth: 1-inch: 96 sizes (from 10x10x1 to 30x36x1); 2-inch: 36 sizes (from 10x10x2 to 30x36x2); 4-inch: 17 sizes (from 12x20x4 to 25x25x4); 5-inch: 1 sizes (from 20x25x5 to 20x25x5).

MERV 8 is the common equipment-protection grade: it catches dust, lint, pollen and most pet hair with very little airflow restriction.

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.

The Filterbuy listing names 4 filters per box.

Compared with the Filterbuy Smoke & Allergy Defense MERV 13 Air Filter: MERV rating 8 here vs 13; MPR 700 here vs 1900.

Who it's for, and who should skip it

Sizes and where to buy each

Each size below links to that exact size; check the nominal size printed on the frame of the filter you have now.

Sizes are nominal (the label size); actual dimensions are usually about 1/4 to 1/2 inch smaller so the filter slides into the slot.

Pros and cons

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.

Alternatives worth comparing

Amazon Basics MERV 8 1-inch Furnace FilterMERV 8 from Amazon Basics.

Flanders MERV 8 Furnace FilterMERV 8 from Flanders.

Frigidaire Pleated MERV 8 Air FilterMERV 8 from Frigidaire.

More hvac and furnace filters we cover

• Frigidaire MERV 11 1-inch Furnace Filter
• Glasfloss MERV 10 Furnace Filter
• Nordic Pure 5-Inch MERV 12 Filter for Honeywell and Lennox
• Honeywell MERV 13 Furnace Filter
• Reair MERV 8 1-inch Washable Furnace Filter

All hvac and furnace filters, compared in one table · Every Filterbuy product we cover

Final verdict

A practical choice for everyday dust and equipment protection. Check the size table and order the exact size on your old filter's frame.

Where to buy

Questions buyers ask