Trane FLRQB5AH18M11 17.7x20x4.7 MERV 11 QuikBox Replacement Media Filter - 2 Pack

  • Ships flat in 2 pack carton
  • 17.7 x 20 x 4.7
  • MERV 11
  • OEM Trane
  • QuickBox replacement filters are backward compatible to fit every TFM FilterBox
  • Designed for Trane QuikBox media cabinets with 18.5” wide air handlers
  • 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)
  • High dust holding capacity
  • Average life 60-90 days
  • Up to 25 times more effective than a disposable 1" filter
  • 4.7 inch filters  

Trane Quick box Filters for Enviorwise Media Cabinets by Size and Model Number(Experience Checked by Atomic)

FLRQB5AH18M11 17.7 x 20 x 4.7

FLRQB5AH21M11 20.7 x 20 x 4.7

FLRQB5AH23M11 22.7 x 20.7 x 4.7

FLRQB5AH26M11 25.2 x 20 x 4.7

FLRQB5DN17M11 16.7 x 20 x 4.7

FLRQB5FR16M11 15.7 x 19 x 4.7

FLRQB5FR17M11 16.7 x 26 x 4.7 

FLRQB5FR21M11 20.2 x 26 x 4.7

FLRQB5FR24M11 23.7 x 26 x 4.7

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Customer Reviews

Based on 50 reviews
Jean Guillaume


R. B.
Excellent Filter, Great service

My second order from Atomic Filters. The filter was out of stock, but I was notified when they were available. I placed my order and received them quickly. I will order my next from Atomic Filters.

Great product, Superb customer service

I needed this filter but they were out of stock. I asked for notification when the item was back in stock. I was pleasantly surprised by the notification and quick shipping. The filter is a perfect fit. I'll be ordering all my filers here.

Frederick ORA
Follow through 👍

When I ordered my needed furnace filters, Atomic was out of stock. The stated they would notify me when in stock, and did so I may place my order. I commend Atomic on their communications and their fulfillment. Thank you ❗️

K Porter.
Great service and price

Filters arrived as advertised. Communication from Atomic Filters was very good with timely notices i.e., processing, shipping etc. Price was what my AC company charges for one. Will definitely use again.


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