Why it matters
The Aerostar Pleated MERV 8 Air Filter is a pleated furnace and air conditioner filter rated MERV 8 (MPR 600 on the 3M scale). Its size table lists 12 sizes in 1-inch, 2-inch, 4-inch, 5-inch depths, each linked to its own listing.
Sizes by depth: 1-inch: 9 sizes (from 12x12x1 to 25x25x1); 2-inch: 1 sizes (from 16x20x2 to 16x20x2); 4-inch: 1 sizes (from 16x25x4 to 16x25x4); 5-inch: 1 sizes (from 16x25x5 to 16x25x5).
MERV 8 is the common equipment-protection grade: it catches dust, lint, pollen and most pet hair with very little airflow restriction.
The listing sells it as 6 filters per pack; the material is polyester.
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 Aerostar listing names 6 filters per box.
Compared with the Aerostar Pleated MERV 11 Air Filter: MERV rating 8 here vs 11; MPR 600 here vs 1200; pack size 6 Count here vs 4 Count.
Who it's for, and who should skip it
Good fit if
- Everyday dust and equipment protection
- Homes that change filters on schedule
Look elsewhere if
- Smoke or fine-particle control
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.
| Size | Actual size | Buy this size |
|---|---|---|
| 12x12x1 | 11.5 x 11.5 x 0.75 in | Amazon |
| 16x20x1 | 15.5 x 19.5 x 0.75 in | Amazon |
| 16x25x1 | 15.5 x 24.5 x 0.75 in | Amazon |
| 18x20x1 | 17.5 x 19.5 x 0.75 in | Amazon |
| 18x24x1 | 17.5 x 23.5 x 0.75 in | Amazon |
| 20x20x1 | 19.5 x 19.5 x 0.75 in | Amazon |
| 20x24x1 | 19.5 x 23.5 x 0.75 in | Amazon |
| 20x25x1 | 19.5 x 24.5 x 0.75 in | Amazon |
| 25x25x1 | 24.5 x 24.5 x 0.75 in | Amazon |
| 16x20x2 | 15.5 x 19.5 x 1.75 in | Amazon |
| 16x25x4 | 15.75 x 24.25 x 3.75 in | Amazon |
| 16x25x5 | 15.75 x 24.25 x 4.38 in | Amazon |
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
Pros
- MERV 8
- MPR 600
- 12 sizes listed
- 6 Count per pack
Cons
- Catches little of the finest smoke and dust
- 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.
| MERV rating | 8 | Retailer |
|---|---|---|
| Compatible devices | Air Conditioner, Furnace | Retailer |
| Dimensions (seller) | 19.75"L x 19.75"W x 0.75"Th | Retailer |
| Product weight | 3.06 pounds | Retailer |
| Unit count | 6 Count | Retailer |
| Material | Polyester | Retailer |
| Model number | 20x20x1 MERV 8 | Retailer |
| In the box | Air filter | Retailer |
| MPR (3M rating) | 600 | Retailer |
Alternatives worth comparing
More hvac and furnace filters we cover
- Amazon Basics MERV 5 Furnace Air Filter
- Filter King Pleated MERV 8 Air Filter
- Filtrete MERV 14 1-inch Furnace Filter
- Levoit Allergen Defense MERV 11 1-inch Furnace Filter
- Aerostar 20x20x2 Pleated MERV 11 Air Filter
All hvac and furnace filters, compared in one table · Every Aerostar 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
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure