Suggested Retail: $39.96. True Blue Allergen Air Filter MERV 11 18x30x1 4-Count Pack. True Blue Allergen Air Filters with a MERV 11 rating are designed for families with allergies and pets. The electrostatically charged material traps allergens like dust, dander, pollen, and more, promoting healthier breathing. These filters are 53 times more effective than fiberglass filters and last up to 4 months. Made in the USA, they are easy to install and replace every 4 months for optimal performance. Brand: True Blue. Model: 318301.4. Num: lqm3wtScZ7cs8iX0qSJSKw. Lot Sticker: OH001.04-00000002-14. 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.