Suggested Retail: $23.49. Filtrete 18x24x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defense 3-Month Pleated 1-Inch Electrostatic Air Cleaning Pack of 2. Filtrete 18x24x1 MPR 1000 Air Filter by 3M captures unwanted particles from household air for a cleaner home environment. It uses exclusive Filtrete 3-in-1 technology with MPR 1000 and MERV 11 rating to pull and capture microparticles such as pet dander, smoke, and smog. It also captures large particles like lint, pollen, mold spores, and household dust. This pack includes two 3-month pleated 1-inch home HVAC filters for your furnace, air conditioner, or HVAC system. 18 x 24 x 1 IN. DIMENSIONS ARE ESTIMATED. Brand: Filtrete. Model: AD21-2PK-6E. Num: jIFtAWEButElH1x0ASBfs3. Lot Sticker: OH001-00000907-19. 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.