Filtrete™ Basic Dust & Lint Air Filter, 300 MPR, 303-4, 20 in x 25 in x 1 in sponge use with appropriate cartridges for

use with appropriate cartridges for various applications including spray painting

They feature threaded internal connections for pressure testing

Convenient single serving

accurate cuts

CSA Approved

Filtrete™ Basic Dust & Lint Air Filter, 300 MPR, 303-4, 20 in x 25 in x 1 in sponge use with appropriate cartridges for#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 CHANGE FILTER AT LEAST EVERY 90 DAYS for optimal performance of your heating & cooling system or HVAC system A dirty filter will slow down air flow and make the