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Trane FLRQB5FR21M11 20.2x26x4.7 MERV 11 QuikBox Replacement Media Filter - 2 Pack

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  • Ships flat in 2 pack carton
  • 20.2 x 26 x 4.7
  • MERV 11
  • OEM Trane
  • QuickBox replacement filters are backward compatible to fit every TFM FilterBox
  • Fits new Trane QuikBox filter cabinets as well as Trane Perfect Fit TFM210B0FR0 cabinets
  • 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 20 times more effective
  • 4.7 inch filters

Here are some of the Quickbox filter model numbers. Click on the part number to go to the product page. Experience check 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 18 reviews
Trane FLRQB5FR21M1 Media Filter Replacement

This filter 2-pack arrived with some assembly (easy) required. Each filter is collapsed liked an accordian, which makes it easier to protect from shipping damage. Atomic Filters has a very competitive price on this filter and they shipped my order out rather quickly. I am a very satisfied customer.

Frank E. Latocha

Very great filter and fast deliver Thant you

Tiffani Estrello
Fast Service

Super fast shipping. Best price I could find! Highly recommend.

Danielle Slouf
Trane filter

It was relatively easy to assemble and install for a first time user. However, I am still waiting for a refund on the previous incorrect sized filter that I returned.

Randy Hendrix
Work Great! On my 3rd set.

The normal filters for these units are expensive. When I first received these I thought "Oh no", but I am on my 3rd set. The seem a little flimsy until you get them put together. They slide in to the filter housing just like the normal filters and work great! It's well worth the few minutes of assembly to have them delivered to my house and to enjoy the savings! Highly recommend.