Filtrete™ Pollen Air Filter, 600 MPR, 9834, 14 in x 25 in x 1 in (4 Pack) Mega-LBD The large 2-port and 3-port

The large 2-port and 3-port diverter valves are both 2

1 Mechanical Seal Carbon

Cermet tipped for longer life

C900 Series Cartridge Filter Head with Directional Vent Valve

Filtrete™ Pollen Air Filter, 600 MPR, 9834, 14 in x 25 in x 1 in (4 Pack) Mega-LBD The large 2-port and 3-port#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 and smoke 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 90 days for 1 in. filters A dirty filter will