not really I don't have the tools anymore :/

That guy moved. I cut out the pocket from the molded carpet and built that out using cardboard. Then I applied my fiberglass over top. I recommend the woven fiber sheets vs. the random stuff. Much cleaner to work with. I attached the box to a face plate. The face plate was made after using cardboard to create a template of the area. It's 3/4 mdf left over from another project that was going at the same time.