21 x 23-1/2 x 5 MERV 11 American Standard BAYFTAH23M Replacement by Accumulair®

US Home Filter provides a complete selection of 21x21-1/2x5 pleated air filters to fit your requirements. These are made in the USA in our manufacturing center in Belton, MO. We’ve been around since 1928 and are a family-owned and operated company with 4th and 5th generations currently employed!

The MERV 11-rated filters will do a superb job of maintaining particles out of your system’s internal components as well as collect particles as minute as 1 micron such as mildew spores, dust mite debris, and animal dander. This is an excellent choice for those who seek the highest degree of airflow along with offering outstanding protection to your system and mitigating common allergens in your home!

If you would like support in confirming your filter size, you can check out our Measurement Chart for help. And, as always, you are invited to call us for support at 1.855.435.9600. M-F 8-5 CST. Also, you will be pleased to know that your air filter order of any size will ship to you with FREE FedEx Ground shipping!