I found this 4 in filter sock holder on ebay http://www.ebay.com/itm/4-filter-sock-holder-/162209060429?hash=item25c469d64d:g:l1IAAOSwV0RXs8YR it arrived yesterday and It solves my issue.
How is it built quality wise? I am looking for something that I can mount on the sides of my sump for both my 120 and 40 to drain into. I haven't looked a whole lot but this looks like I could glue or screw it to the sides and it should do the trick.
Im pretty sure its made out of lexan and the quality of the cuts is great, While I was putting it togther this evening I dropped one of the pieces that puts it togther and it broke, I made another out of a piece of lexan i had in the shop. I still like it and feel once its put togther and in the tank it will be just fine.