What is the difference between 3M Filtrete filters and common fibreglass filters?
Fibreglass filters were originally developed to look after your furnace and/or air conditioning system. They were not designed to considerably help your indoor air quality. Filtrete filters do both. They aid your indoor air grade by attracting and catching allergy-aggravating microparticles, and help keep your furnace equipment clean. Air in your house is continually re-circulated through the filter, and is cleaned with each pass through the filter.