Glasfloss 20x30x1 - MERV 10 - Pack of 12 - Pleated Air Filter - Furnace Air Filter - Made in USA (Actual Size: 19 1/2 x 29 1/2 x 7/8 Inches)
- Glasfloss 24x28x2 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.