I live in the desert, so the only filters available are 1 inch thick and so noisy no matter the brand MERS. This is a perfect fit, made a difference in power consumption for AC and can feel the difference in air quality.
The quality of my filters was poor. Wires poking outside of the filters, some were dirty on the interior accordion material and the accordion material was not folded properly. I asked to do an exchange and I sent pictures over a week ago with no response.