nev..
Terrarist
Here is what happened to mine. The foam rolled and tore either on install or removal.
View attachment 33626
This happened to my original filter also. I think the problem is, that when you slide the filter housing in, if the housing isn't level, (and that wiring conduit almost forces you to push the filter in on an angle) the bottom of the paper filter gets caught on the lower edge of the lip where it sits, and when you push it further, the rubber around the top is the weakest point and this tears until you push it in far enough to free the snag. I believe this will not occur with the foam filter, because the foam will not catch on that point, or it will just compress and slide along. Hard to describe without a photo to assist. When I get home from work I'll see if I can explain better with images.