We special order the internal frame for the half inch furnace filter
Nordic Pure 16x20x4 Pleated Air Filters MERV 13 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home
Actual Size: 6 x 30 x 3/4 (6 x 30 x 0
but they WILL be strong
Nordic Pure 16x20x5 Honeywell Replacement MERV 12 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”
16x25x4 (3 5/8) Pleated MERV 14 Air Filters Number Per Box:1 We special order the internalActual Size: 15 1 2 x 24 1 2 x 3 5 8 (15. 5 x 24. 5 x 3. 63) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. If you are replacing a Honeywell or Lennox 16x25x4 or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 16x25x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 14 is