3M Filtrete 16 in. W x 25 in. L x 4 in. D Air Filter,

Filtrete Allergen Defense air filters turn your central heating and cooling system into a whole house air cleaner. Featuring electro-static technology, these filters reduce airborne allergens such as household dust, lint, dust-mite debris, mold spores, pollen, pet dander and smog. For best results, change your filter every 6 to 12 months. Filtrete air filters are manufactured by 3M and for residential use only.

• Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, air conditioner, or HVAC system.
• Exclusive Filtrete Brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through.
• 1000 and 1200 MPR also available in 4", 4" slim fit and 5" air filters.
• For optimal performance, change your home air filter at least every 90 days for 1" filters, and at least every 12 months for 4" and 5" filters.
• For residential use only.