Suggested Retail: $43.98. Filtrete 12x20x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defense 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4 Pack. The Filtrete 12x20x1 MPR 1000 Air Filter, designed with exclusive Filtrete 3-in-1 technology, helps capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. With an MPR 1000 and MERV 11 rating, it can capture countless microparticles such as pet dander, smoke, smog, lint, pollen, mold spores, and household dust. This 4-pack of 3-month pleated 1-inch filters can be used in your furnace, air conditioner, or HVAC system. 11.81 x 19.81 x 0.81 IN. DIMENSIONS ARE ESTIMATED. Brand: Filtrete. Model: ‎9819-4. Num: fUBx3MzNjH75RRuNoM7U5c. Lot Sticker: OH001.07-00000012-31. 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.