Nominal Size: 20 x 25 x 4, Actual Size: 19 12 x 24 12 x 3 58 (19.5 x 24.5 x 3.63) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. If you are replacing a Honeywell or Lennox 20x25x4 or an air filter with an MPR rating with an actual depth of 4 38, please see our 20x25x5 (4 38 actual depth) Nordic Pure MERV 12 is equivalent to MPR 1500-1900 Made in the USA
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Item# : SPM16219425224
Model # : 20x25x4M12-2