HVAC FILTER 18X18X2

High-efficiency HVAC filter designed to fit standard 18x18x2 inch return air ducts. Captures dust, pollen, pet dander, and airborne particles to maintain clean indoor air quality and protect your heating and cooling system. Easy to install and replace—simply slide out the old filter and insert the new one. Check your system monthly and replace every 1–3 months depending on usage and air quality. Compatible with most residential HVAC units. Helps reduce strain on your equipment and improve energy efficiency.