- Glasfloss 20x36x2 furnace air filter or furnace air filter of MERV 10 rating offer better performance than MERV 8 with same or lower price. Removes dust particles between 1 to 10 microns sizes.
- ASHRAE 52.2 Std MERV 10 Rating approved. ASHRAE highly recommends minimum MERV 10 rating to be used at homes, offices, and hospitals.