Glasfloss 20x20x1 - merv 10 -qty:6 - furnace air filter - made in usa (actual size: 19.5 x 19.5x7/8 inch)

Glasfloss 20x20x1 merv 10 ac or hvac furnace air filter. better performance than merv 8. the ashrae highly recommend to use minimum merv 10 rating at homes & offices to captures airborne particulates of 2.5 to 10 microns sizes. filter media: glasfloss furnace air filter media is 100% synthetic fibers, manufactured and supplied by kimberly-clarke a trust worthy usa company, which offer less airflow resistance and will save you in energy cost. performance test: the glasfloss heating or cooling furnace air filters must meet or exceed ansi/ashrae 52.2 test standards. the z-line filters are classified under ul 900 std and must withstand 180 f temperature. the glasfloss ac furnace air filters collects 94% of airborne particles of 3 to 10 microns including dust, lint, debris, pollen, allergen & pet dander. glasfloss air filters last up to 90 days without losing it performance.  glasfloss serving usa since 1936. the filter materials are procured and assembled in usa. millions of our customers in residential & commercial sector have tried glasfloss filters for last 80 plus years with complete satisfaction.