- Nominal Size: 20 x 24 x 4, Actual Size: 19 3/8 x 23 3/8 x 3 5/8 (19.38 x 23.38 x 3.63)
- Measure your air filter for the exact size and compare it to our actual size to ensure proper fit.
- Ideal for high efficiency air filtration and will help those with moderate allergies and asthma.
- Nordic Pure MERV 12 is equivalent to MPR 1500-1900
- Made in the USA
https://www.amazon.com/dp/B005ESP89G/ref=cm_sw_r_cp_api_glt_i_QAMRRFWD4FXXPF280Y1H