You'll probably get dozens of different answers on how to attach your pans and all of them will be good. What I do is drill small holes in the rim of the pans at the corners. I then use either pipe cleaners or preferably gardening tie-up wire to attach the box to the cage. I have never had a problem with this method and have been using it for 5 yrs. Also, to save a little money and get a slightly larger box, I try to find solid walled storage bins at the hardware store etc. They work very well. Good luck! [Posted in FML issue 3158]