Why it matters
The Aerostar Pleated MERV 11 Air Filter is a pleated furnace and air conditioner filter rated MERV 11 (MPR 1200 on the 3M scale). Its size table lists 11 sizes in 1-inch, 2-inch, 5-inch depths, each linked to its own listing.
Sizes by depth: 1-inch: 8 sizes (from 12x12x1 to 20x25x1); 2-inch: 2 sizes (from 16x20x2 to 20x20x2); 5-inch: 1 sizes (from 16x25x5 to 16x25x5).
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.
The listing sells it as 4 filters per pack; the material is synthetic.
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 made in the USA.
Compared with the Aerostar Pleated MERV 8 Air Filter: MERV rating 11 here vs 8; MPR 1200 here vs 600; pack size 4 Count here vs 6 Count.
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
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 |
| 16x20x2 | 15.5 x 19.5 x 1.75 in | Amazon |
| 20x20x2 | 19.5 x 19.5 x 1.75 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 11
- MPR 1200
- 11 sizes listed
- 4 Count per pack
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.
| MERV rating | 11 | Retailer |
|---|---|---|
| Compatible devices | Air Conditioner, Furnace | Retailer |
| Dimensions (seller) | 21.5"L x 16.38"W x 0.75"Th | Retailer |
| Product weight | 2.25 pounds | Retailer |
| Unit count | 4 Count | Retailer |
| Material | Synthetic | Retailer |
| Model number | 16 3/8x21 1/2x1 MERV 11 | Retailer |
| MPR (3M rating) | 1200 | Retailer |
Alternatives worth comparing
More hvac and furnace filters we cover
- BNX MERV 13 1-inch Furnace Filter
- Nordic Pure MERV 7 1-inch Furnace Filter
- Filterbuy MERV 14 1-inch Furnace Filter
- AIRx Replacement Filter for Lennox X6673
- Honeywell MERV 12 4-inch Furnace Filter
All hvac and furnace filters, compared in one table · Every Aerostar product we cover
Final verdict
A practical choice for allergy households. Check the size table and order the exact size on your old filter's frame.
Where to buy
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