Honeywell High-Performance Return Grille Filters (FC40R)
When installed into your home’s ceiling or wall return grille(s) the Honeywell High Performance Return Grille Filters provide air filtration typical to four inch media filters in a one inch return grille space.
The FC40R filter is up to 15 times more effective than a standard one inch filter at trapping and filtering dust, as well as reducing pollen, mold spores , bacteria and other allergens passing through your HVAC system. This is ensures cleaner air is distributed throughout your home.
Additionally, the Honeywell FC40R filter lasts three times longer than standard one inch filters, which means less maintenance for improved indoor air quality.