Product details:

Featuring high performing electrostatic technology, Filtrete filters proactively capture dust, bacteria, germs, viruses and allergens in your air. For optimum performance, change your filter every 90 days or sooner. The Filtrete Elite Allergen Reduction filter outperforms all 1 inch filters. It attracts and captures microscopic particles like bacteria and particles that can carry viruses and large particles like mold spores and pollen.Specifications;- Dimensions14 in. x 20 in. ;-Dimensions14 in. x 25 in. ;-Dimensions16 in. x 20 in. ;-Dimensions16 in. x 25 in. ;-Dimensions20 in. x 20 in. ;-Dimensions20 in. x 25 in. ;-Dimensions20 in. x 30 in