IAQ DPFS20X25.25X3.50 | Our#: 178224

Replacement for Aprilaire #102 Filter

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IAQ DPFS20X25.25X3.50 | Our#: 178224

  •  Fast Shipping & Free Returns
  •  100% Compatibility Guarantee

Enjoy a cleaner home with less work

  • Reduces dust, lint, dust mites, pollen
  • Will help keep your HVAC system clean
  • Maintains superior airflow
  • Creates cleaner indoor air
  • Actual Dimensions: 19" x 25 ¼" x 3 ¾"
  •  Fast Shipping & Free Returns
  •  100% Compatibility Guarantee
Frequently Purchased Together

Product Details

2-Pack Aftermarket Replacement for Aprilaire # 102 Filter.  Fits the Aprilaire 2120 air cleaner.

Easy to follow installation instructions are printed on each carton.  The 2120 Air Cleaner can be upgraded to a MERV 13 Air Cleaner by using the # 1213 Upgrade Kit.

Filter Features:

  • Moisture resistant beverage board
  • 30 gauge galvanized expanded metal grid to reinforce media
  • MERV 8 captures mold spores, pollen, and large particles
  • Expect the same performance as factory original filter at a value price
  • Deep pleat means low pressure drop and less strain on HVAC Equipment
  • Actual Dimensions: 20" X 25 1/4" X 3 3/4"
  • Note: This product is not manufactured or distributed by Research Products Corporation, owner of the registered trademark Aprilaire®

Replaces These Filters:

National Filter Sales:

How to change your furnace/air-conditioner/HVAC air filter

Estimated time: 10 minutes or less


  1. Determine the location of your filter

    Your forced air system will be similar, whether or not it is a heating (furnace) or cooling (AC) system – or both. The furnace filter housing/slot is located right next to the heating/cooling system’s air handler or blower. Your filter(s) may also be located in a return grille on the wall or ceiling of your home.

  2. Determine the type/size of filter that you use

    Typically, the dimensions or part number of the filter will be printed on the filter frame. Use this information to order a new filter.

  3. Purchase a new air filter from DiscountFilters.com

    Visit DiscountFilters.com and purchase a new filter. Use our filter finders to verify the correct match.

  4. Remove the old filter

    Turn off the power to the heating/cooling system and remove the old filter from its housing/slot and discard.

  5. Insert the new filter

    Pay attention to any airflow direction arrows printed on the frame of the new filter. Install the filter by sliding it into the filter housing/slot with the airflow arrow pointing towards the blower. If installing the filter in a wall or ceiling grille – the airflow arrow should point towards the wall or ceiling. Turn on the power to the forced air system.

    Enjoy cleaner air!