Trane FLRQB5AH26M11 | Our#: 188138

Trane QwikBox® Replacement Filter - FLRQB5AH26M11, 2-Pack

Trane FLRQB5AH26M11 | Our#: 188138

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Reduce common allergy symptoms

  • Reduces allergy irritating particles
  • Captures allergens like dust, mold spores, pet dander, dust mite debris and more
  • Lessens odors from car fumes & smog
  • Creates cleaner indoor air
  • Actual Dimensions: 20" x 25 ½" x 4 ⅝"

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Product Details

Trane QwikBox® Replacement Filter - FLRQB5AH26M11, 2-Pack.   This filter ships flat in a space saving design.  It requires assembly.  This filter will replace current Trane expandable type media and BAYFRAME kits that have been standard in the TFM filter cabinet. The QuikBox® media is backward compatible to fit all TFM cabinets in the field, as well as the new QuikBox® cabinets.


  • Fits new Trane QuikBox® cabinets for Trane S-Series furnaces
  • Synthetic fiber filter in a chipboard frame that ships flat and pops up to a finished assembly in less than one minute (instructions printed on frame)
  • MERV 11 Efficiency per ASHRAE 52.2-2012 Standard Test
  • High dust holding capacity
  • Average life 60-180 days
  • Ships flat in 2-pack carton
  • This filter can replace the BAYFTAH26M2 and fit in PerfectFit TFM260B0AH0
  • Nominal Dimensions - 25.5" X 20" X 4.7"

  • Replaces These Filters:


    Fits In These Systems:


    Additional Information

    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

      Visit 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!