GeneralAire 13415 - RESERVEPro (#4511) Expandable Air Filter, MERV 11 is a brand new, OEM filter.

This GeneralAire air filter has MERV 11 filtration and traps airborne particles as small as 1.0 micron.

GeneralAire recommends you replace this air filter every 12 to 24 months to achieve the best results.

Fits: GeneralAire® AC4, MAC Air Cleaners.

Expandable Air Filter.

If you have any questions regarding this product please feel free to email Sales@DiscountFurnaceFilter.com or call 1-888-623-4678 and one of our knowledgeable Customer Service Representatives will be happy to help.