Trane FLRQB5DN17M11 16.7x20x4.7 MERV 11 QuikBox Replacement Media Filter - 2 Pack

Be careful!

Assembling these filters in not for the faint of heart. I sliced a couple fingers the first time I tried it. The other day we had a new furnace guy and he had never seen one before, so I had to show him how to put it together. I guess they work--the old one was dirty enough, so they must be trapping some dust.

Pain to assemble

I guess these are good filters, but they are shipped flat and have to be assembled. The cardboard frame is flimsy and hard to work with. It took me a half hour to fold it into shape. Lucky I had some HVAC tape on hand to keep it together.

They come unassembled

First time I have ever had to assemble an air filter. It’s not hard to do but it’s also not convenient.