Description
Actual Filter Size: 19.75 x 24.75 x 4.375.This filter is compatible with Lennox furnaces calling for a 5 inch filter.1 Recommended Brand (Filtrete Brand is the most recommended brand of HVAC Air Filters based on the US Filtrete Brand Health Tracker, Ipsos, June 2022).The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it.FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 12 months for 5 inch filters.A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Sign-up for a filter change reminder program that works for you!.CAPTURES MORE PARTICLES than fiberglass air filters