Fantastic filter, I chose 1900 as it has better filtration and doesn't restrict airflow even at 10% compared to 2200, too much if you don't plan to drive in your car. in your home. The 1500 has half the pleats so for the extra $2 you get a much better filter than the 1900. Bluetooth was very easy to set up and use and works flawlessly. The only problem I have is my listing is 19 1/2 square and I can't order that size (custom) at low prices even though they sell 19 1/2 without bluetooth you understand. Since I have a 3/8" lip to hold the filter in place and not suck it into the intake I was able to cut one side of the paper (edge of the crease) and the other side (straight crease) compress. . I can cut off the straight side when I replace it next time. Again, I have a 3/8" lip all the way around where the filter fits snugly against the frame. It doesn't affect how it works at all as the frame has that 3/8 inch lip that keeps it securely in place. There is no need to use tape on the cut corrugated end, the bezel will hold it in place, on the side end you will need to trim that edge, trim the ribbing, fold the paper over and tape with 1" tape. Did! I hope you don't have an odd shape. If the filter gets dirty quickly, it's doing its job! Clear? See photo
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