21 x 27 x 5 MERV 13 American Standard BAYFTFR21M Replacement by Accumulair®

US Home Filter provides a complete selection of 21x27x5 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!

MERV 13 is our highest rating and is the best choice when you have extreme allergies or seek the maximum level of indoor air quality. These will collect 1 micron particles at an 80 percent efficiency. MERV 13 will even accumulate particles as minute as 0.3 microns. That means you will be collecting attached viruses and bacteria in addition to the microscopic sub-pollen particles that can make their way into the lower airways and trigger allergic reactions.

If you would like support in confirming your filter size, 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!