Why it matters
The BNX TruFilter MERV 11 Air Filter is a pleated furnace and air conditioner filter rated MERV 11 (MPR 1000 on the 3M scale). Its size table lists 31 sizes in 1-inch, 2-inch, 4-inch, 5-inch depths, each linked to its own listing.
Sizes by depth: 1-inch: 25 sizes (from 10x10x1 to 24x30x1); 2-inch: 2 sizes (from 20x20x2 to 20x25x2); 4-inch: 3 sizes (from 16x20x4 to 16x25x4); 5-inch: 1 sizes (from 20x20x5 to 20x20x5).
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 6 filters per pack; the material is polypropylene.
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 BNX listing names made in the USA, electrostatically charged media and 6 filters per box.
Compared with the BNX TruFilter MERV 8 Air Filter: MERV rating 11 here vs 8; MPR 1000 here vs 600.
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 | Buy this size |
|---|---|
| 10x10x1 | Amazon |
| 10x30x1 | Amazon |
| 12x20x1 | Amazon |
| 12x30x1 | Amazon |
| 14x14x1 | Amazon |
| 14x18x1 | Amazon |
| 14x20x1 | Amazon |
| 14x24x1 | Amazon |
| 14x25x1 | Amazon |
| 14x30x1 | Amazon |
| 15x20x1 | Amazon |
| 16x16x1 | Amazon |
| 16x20x1 | Amazon |
| 16x24x1 | Amazon |
| 16x25x1 | Amazon |
| 18x18x1 | Amazon |
| 18x24x1 | Amazon |
| 18x30x1 | Amazon |
| 19x21x1 | Amazon |
| 20x20x1 | Amazon |
| 20x23x1 | Amazon |
| 20x24x1 | Amazon |
| 20x25x1 | Amazon |
| 20x30x1 | Amazon |
| 24x30x1 | Amazon |
| 20x20x2 | Amazon |
| 20x25x2 | Amazon |
| 16x20x4 | Amazon |
| 16x25x4 | Amazon |
| 20x20x4 | Amazon |
| 20x20x5 | 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 1000
- 31 sizes listed
- 6 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) | 19.68"L x 19.68"W x 0.75"Th | Retailer |
| Product weight | 2.4 pounds | Retailer |
| Unit count | 6 Count | Retailer |
| Material | Polypropylene | Retailer |
| Model number | BN-M11S-20x20x1-6PP | Retailer |
| In the box | 6 x BNX MERV 11 20x20x1 Air filters | Retailer |
| MPR (3M rating) | 1000 | Retailer |
Alternatives worth comparing
More hvac and furnace filters we cover
Final verdict
A sensible 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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