This is a permanent, washable electrostatic air filter in a nominal 20 x 30 x 1 inch size. It has a MERV 8 rating with 88% arrestance and captures particles as small as one micron, including pollen, dust, bacteria, mold spores, pet dander and smoke. It is designed to last for years without replacement.
The filter's fibers are prone to static, and the resulting electrostatic charge helps capture particles. The filter allows maximum airflow and holds up to 126 grams (4.4 ounces) of dust before it needs cleaning. The frame is made from a single piece of roll-formed galvanized steel, fastened at one corner with a single rivet. The filtering media uses 2 layers of polypropylene.
The filter is sized to industry standards, so it can replace a disposable filter of the same listed size. The actual thickness is 3/8 inch smaller than listed, so it fits standard-size openings. To clean it, flush it with water against the direction of the airflow arrows, then rinse the other side. Let the water drain and let the filter air dry before reinstalling.
- Listed size
- 20 x 30 x 1 inch
- Other sizes
- 20 x 25, 20 x 24, 20 x 20
- Actual size
- 3/8 inch smaller than listed
- Rating
- MERV 8, 88% arrestance
- Particle size
- Down to 1 micron
- Dust capacity
- Up to 126 g (4.4 oz)
- Frame
- Roll-formed galvanized steel
- Filter media
- Polypropylene layers
- Care
- Rinse with water, air dry
- In the box
- 1 washable air filter