3M Filtrete 20 In. x 30 In. x 1 In. 100 MPR Basic Custom Fit Trimmable Air Filter

Filtrete Basic Custom Fit Air Filter outperforms fiberglass air filters for your furnace, air conditioner, or HVAC system. Captures particles such as lint and household dust. Quickly cuts to the size needed. Filter is washable and reusable. For best performance, change air filter every 90 days or sooner. (50.8 cm x 76.2 cm x 2.5 cm)