Suggested Retail: $39.99. Filtrete AC Furnace Air Filter MPR 300 Clean Living Basic Dust 20x25x1-in 6-Pack. Filtrete AC Furnace Air Filter MPR 300 Clean Living Basic Dust 6-Pack outperforms fiberglass, washable and non-electrostatic 3 month pleated 1 inches air filters. It features exclusive Filtrate Brand 3 in 1 technology from 3M that traps unwanted air particles, while letting cleaner air flow through. It attracts and captures large particles such as lint, household dust, dust mite debris and mold spores. For optimum performance, it is recommended to change your home air filter every 90 days or sooner. The higher the MPR, the more micro particles such as pollen, pet dander, smoke, bacteria and viruses your filter will capture from the air passing through it. Brand: Filtrete. Num: sm2NDllEfTdZpdU3zNDFDW. Lot Sticker: OH001-00000328-44. 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.