Review on Nordic Pure 20x20x4 MERV 12 2-pack Furnace Filters by Norlan Pippinmd

If you have a luggage rack with newfangled 4 inch filters, Nordic Pure is the only filter that will fit. Honeywell 20x20x4 will NOT fit Carrier air purifiers! Perfect replacement for TopTech TechPure TT-FM-2020 QB OEM filter - QwikBox® for much more money - and you need to assemble it yourself. OH! Every time I assembled TopTech I managed to pierce my finger with their razor sharp wires. See my review on the video page for this product at http://amzn.to/2ueT9Yj. It fits almost perfectly - it bulges out maybe 1/8 inch too far, but the lid snaps firmly in place and creates the vacuum effect my air conditioner needs. Yes, and 180 days is probably too long for a warm climate. My old TT-FM-2020 had what appeared to be mold on one side. Not good.