14x22x1 inch) 13.5 21.5x7/8 (Actual -Qty:4 Filter in - - x MERV USA Made Furnace Glasfloss Size: 10 Air -

Glasfloss 14x22x1 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- filters are classified under UL 900 STD and must withstand 180 F temperature.