Why it matters
The Nordic Pure 4-Inch Pleated MERV 12 Air Filter is a pleated furnace and air conditioner filter rated MERV 12 (MPR 1500 on the 3M scale).
MERV 12 catches a larger share of fine particles than MERV 11, which suits allergy households whose system handles a denser filter.
A 4-inch filter (about 3 5/8 inches actual) fits 4-inch media cabinets and deep filter racks; it holds several times the pleated media of a 1-inch filter.
The listing sells it as 2 filters per pack; the material is electrostatically charged synthetic pleated media.
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.
This listing is the 20x25x4 size; order by the size printed on your old filter's frame.
The Nordic Pure listing names 2 filters per box.
Compared with the Nordic Pure Pleated MERV 12 Air Filter: pack size 2 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
- Systems that whistle or short-cycle with denser filters
Pros and cons
Pros
- MERV 12
- MPR 1500
- 2 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 | 12 | Retailer |
|---|---|---|
| Compatible devices | Air Conditioner, Furnace | Retailer |
| Dimensions (seller) | 24.5"L x 19.5"W x 3.63"Th | Retailer |
| Product weight | 3.52 pounds | Retailer |
| Unit count | 2 Count | Retailer |
| Material | Electrostatically Charged Synthetic Pleated Media | Retailer |
| Model number | 20x25x4 | Retailer |
| In the box | air filters | Retailer |
| MPR (3M rating) | 1500 | Retailer |
Alternatives worth comparing
More hvac and furnace filters we cover
- Simply MERV 11 4-inch Furnace Filter
- UBeesize MERV 8 1-inch Washable Furnace Filter
- Simply MERV 13 1-inch Furnace Filter
- Filtrete 14x14x1 MPR 1900 Air Filter
- Simply MERV 11 1-inch Furnace Filter
All hvac and furnace filters, compared in one table · Every Nordic Pure product we cover
Final verdict
A sensible choice for allergy households. Confirm the model it fits before ordering.
Where to buy
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