Jams,
I went through the same thing with them about 4 years ago and have avoided them since. Except I called and spent 30 minutes on the phone with them being assured the air filter that I was looking at would work under my hood. I had bought the dual four type before from them and told them it had to be that exact size and height. They told me they had one out of the box and it was laying beside the regular one and they were identical in size. So I ordered it and when I got it, the darn thing was 2" to high. I called them back and they remembered talking to me about it. I told them I wanted to return it and they told me that unless it was damaged and I could show it was done is shipping they would not take it back. So I wound up throwing the thing away as it wouldn't fit any of the cars around here.
Ron