Here the Dog box is being fastened securely to the rear baffle layer with PVA glue and 8 gauge screws. (the front layer will hide these fixing screws).
When I started measuring up and positioning the physical location of the Dog box on the baffle after cutting all the holes (7 of them)I realised how little real estate there was left on the baffle.
The Dog Box fits snuggly in a strategic location on the baffle and provides significant strength once fixed to the structure.
Ian