2 Pack OEM Trane FLRQB5AH21M11 TFM21DA0FR0 TFM215B0AH0 - QuikBox Replacement Media Filter MERV 11-20.7" x 20" x 4.7" by MTBioinUS

Filters fit as they should and was cheaper then me buying them wholesale at trane

As described.

Assembly is a real hassle, not obtainable but at this price they should come totally assembled. Other than that it's a Trane approved filter for many of their newer HVAC systems.

I’m not the best DIY person but I assembled it in about 5 minutes. Easily fit in (easier than old one)

Love these box filters for the small footprint they take up. This one works great fir our Trane HVAC.

only need to change filter twice a year

I ordered these per our HVAC installer and these are not cut correctly. I fought and fought with these for 2 years, then decided to get scissors and duct tape to correctly cut a small portion out for a decent fit. That worked well.I just ordered a different brand already assembled and individually wrapped. Will have to wait and see if they are better since I recently changed the filter.

These are expensive, a hassle to assemble, and when you put them together they are limp, uneven, and generally poor quality.But they are a dead fit, and I don't knwo where else to get this odd size filter as an exact slide in replacement.I paied 10,000 to have this train AC system installed and I am not impressed with it.