My only criticism of the filters is that the color of the material is bright yellow and green on one side, which in my system has to face down. The colors are bright and quite noticeable against my white ceiling and vents.
After installing the filter I notice a loud whistling coming from the intake where the filter was installed. After doing some research found out it could be causing my blower motor to work to hard. Could also be from the high merv rating. I guess I will have to find a lower merv rating instead of an 11 to something lower.