Review on 💨 Enhance Indoor Air Quality with FilterBuy 20X30X1 Pleated Furnace Filters by Juan Moncrief

I looked at the AC filters and saw that they had a good rating so I bought 6. Not very happy, they are a bit narrower and fell into the backcourt. I need to find a way to keep them stable without making noise. We've only recently had issues with noise in this return (singing/whining) which I think is related to the filters as the return hasn't had an issue in the last 20 years (replaced entire unit 5 years ago). We carry out the annual maintenance of all devices. Like everything else these days, they seem to be making them cheaper, but the costs keep going up! I had high hopes for them but honestly I can't recommend them.