CFS – Carbon Activated Pre-Filter Compatible with FLT4825 HEPA Filter, AC4800 Series, Filter B Models – Fresh & Filtered Air for Indoor – Charcoal Air Filter Sheet – 4.8"x15.75" – Black (4 Pack)

Carbon Activated Pre-Filter 4-pack made in the USA from CFS for use with the GermGuardian FLT4825 HEPA Filter, AC4800 Series. This is not a GermGuardian OEM product and is not covered under any GermGuardian manufacturer's . The GermGuardian brand names and logos are the registered trademarks of their respective owners. Any use of the GermGuardian brand name or model designation for this product is made solely for purposes of demonstrating compatibility. "