16x16x2 MERV 11 Furnace Filters

Made in the USA from Kimberly-Clark electrostatic filter media.  ASHRAE 52.2 certified MERV 11 filters and UL rated Class II. 910 CFM flow rate, 9.2 sq ft of electrostatically charged filter media which will not harbor microbial growth. Change every 3 months under normal conditions. If you run your HVAC fan 24/7, change when filter media turns light gray. Technical Specifications PDF file.