Suggested Retail: $86.77. Filtrete 14x14x1 AC Furnace Air Filter MERV 11. This Filtrete Allergen Defense Air Filter transforms your central heating and cooling system into a whole-home air filtration operation. It helps capture various sizes of particles, from the large like lint, pollen, dust and pet dander, to the microscopic such as smoke and smog. The filter is designed with exclusive Filtrete Brand 3-In-1 Technology from 3M to trap unwanted air particles while allowing cleaner air to flow through. It is recommended to change your home air filter at least every 90 days for 1 in. filters, and at least every 12 months for 4 in. and 5 in. filters. Brand: Filtrete. Model: ‎AD11-6PK-1E. Num: 9Vi8kgqFCsuEBxfFOaz7Ov. Lot Sticker: OH001-00000909-74. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.