Filtrete 16x25x4 Ultra Allergen Filter for Honeywell, Trion - 2 PACK (15 7/8 x 24 9/16 x 4 5/16)

By: 3M


Manufacturer Part # NDP01-4IN-2P-2 Our Item # IA3178

Please Note: Not all 16x25x4 furnace filters are the same size.  
This filter's actual size is 15 7/8" x 24 9/16" x 4 5/16".

If you have a concern regarding whether this filter will fit in your system, you should check the actual dimensions of your filter housing or the filter you are replacing, as the actual dimensions of media air cleaner housings and filter slots may vary. This filter works best in media housings or slots sized within the following ranges: Minimum slot size: 15 7/8" x 24 9/16" x 4 5/16". Ideal maximum slot size: 16" x 24 11/16" x 4 7/16".

Fits Models:

  • Honeywell 16x25x4 Media Air Cleaners, including F25, F35, F100, F150, F200.
  • Trion Air Bear 16x25x4 Media Air Cleaners, including 1400 series.

Filter Specifications:

  • Actual Size: 15 7/8" x 24 9/16" x 4 5/16"
  • Listed (Nominal) Size: 16" x 25" x 4"
  • 97% effective at attracting and capturing large allergens like mold spores, pollen, and dust mite debris.
  • 3M Performance Rating: 1550
  • MERV Rating: 12
  • Multi-pack: Contains two filters
  • 3M Part: NDP01-4IN-2P-2 (DP01)
  • Filter Life: Up to 12 months

Recommended Replacement:
This filter should be replaced at least once every twelve months. The life of a filter can depend on the individual conditions in your home. You may need to change your filter more often if your home has construction work in progress or very polluted indoor air. Also, running your HVAC fan continuously will improve your air quality but will shorten the life of the filter.