Trane FLRQB5AH21M11 20.7x20x4.7 MERV 11 QuikBox Replacement Media Filter - 2 Pack

• Ships flat in 2 pack carton
• 20.7 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 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