18x18x4 (17 3/4 x 17 3/4 x 3 3/4)
- APR 1950 Rating What is APR?
- MERV 13 Efficiency What is MERV?
- Meets criteria required for certification in the Leadership in Energy Environmental Design
- Captures airborne allergens including pollen, dust mites, dust/lint, dander, mold spores, smoke, smog, fungus, and bacteria
- Pleated panel design enhances dust holding capacity and allows maximum airflow
- More than 30 times more efficient than ordinary fiberglass filters
- No chemicals added. Accumulair filters are chemical-free!
- Highest efficiency Accumulair® filter on the market
- Lasts UP TO 3 months!