The WEB Plus 25 in. x 30 in. x 1 in. Adjustable FPR 4 Air Filter traps dust-sized particles to help provide allergy relief. It is washable and reusable and can last up to 10 years.
- Filter performance rating (FPR) of 4
- Electrostatically charged fibers trap microscopic particles
- Lasts up to 10 years
- Filters dust, mold, pollen and smoke to provide allergy relief
- Washable and reusable
- Trimmable to fit sizes 14 in. x 20 in. up to 20 in. x 25 in.