mounting internal part of rooftop air con
i have a dometic penguin 2 installed on the curved roof, but cant figure out how to install the plastic inside air distribution box (ADB, they are a matched set but came with no instructions). the internal metal 'clamping' plate is much smaller than the adb and has no screw holes for it. it appears that the adb needs a flat framework to attach to on the ceiling which is of course curved. The ADB does not have any flexibility to bend.
has anyone run into this issue, or have any idea how to solve it? i can run tools but cant visualize the finished product in this case. could it be something that gets pushed up into the (to be enlarged) 14" hole?
thanks for any ideas