Genuine Honeywell FC40R Series Return Grille Media Filters
FC40R Air Filter Overview
The Honeywell FC40R series of pleated media air filters are unique in that they are in the 4 to 5 inch thickness range, they fit into a 1 inch filter grille. All you need is enough clearance behind the grille to accommodate the additional thickness. Honeywell FC40R filters are an excellent way to upgrade your air filter without the expense of installing a separate air filter box.
Now you can have upgraded media filter efficiency in a one inch filter grille.