Check the listing for details. Aerostar 21x26x5 MERV 11 Air Filter for Trane BAYFTAH26M, 2 Pack. Color: white, Condition: New. Listed at 88.28 USD. Aerostar 21x26x5 MERV 11 Air Filter for Trane BAYFTAH26M, 2 Pack Aerostar Filters Our eBay Store About Us Subscribe Contact Us Aerostar 21x26x5 MERV 11 Air Filter for Trane BAYFTAH26M, 2 Pack Minimal Packaging At Aerostar Filters we like to pass the savings direct to you. All of our filters are made to order, boxed up, and shipped to your door. We reduce cost by not including promotional material, shrink wrap, or outer boxing. Nominal size: 21x26x5; Actual size: 21 1/10"x25 7/10"x5"; This MERV 11 filter is comparable with MPR 1000-1200 & FPR 7 Replaces Trane part number BAYFTAH26M Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, and smoke Simple to install and a cost-effective step towards a healthier home environment. For best results, replace 3"-5" filters every 3-6 months but increase frequency to 30 days during peak summer and winter months 100% synthetic electrostatic media for high efficiency with low air flow resistance. Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive Product Details Size 21x26x5 Actual Size 20.1" x 25.7" x 5" MERV Rating MERV 11 Model Number 21x26x5 MERV 11