OEM Nordyne 918737 & MAH-1056B Replacement Filter
This 5-inch OEM Nordyne filter's nominal size is 20" x 22" x 5". The actual dimensions of this filter are 19" x 22" x 5.25". In order to properly fit your filter, you should know that the actual dimensions must be slightly smaller than the size of your filter slot. The easiest way to find the correctly sized filter for your unit is to remove its existing filter and read the numbers on the side. However, if your current unit doesn't have a filter or the existing filter doesn't seem to fit properly, we recommend taking a measuring tape and finding the dimensions this way.
This filter features a MERV rating of 11, which means it can help to remove common household particles down to .3 microns in size. An few example of particles that you'll capture by using this filter are mold spores, dust mite debris, some types of larger pollens, pet dander, cooking smoke and tobacco smoke particles.
With this filter, you'll be able to protect your HVAC unit from debris for 6 to 12 months, and provide basic allergy protection for your entire home.