Hi,

The photos should show up, but if you can't see them then here goes:
Photos 1 & 2 show a steel rule between the aft inside (uppermost) face of the centre foot and the rear foot/tube joint. This measures 445mm.
Photos 3 & 4 show a steel rule between the fore inside (uppermost) face of the centre foot and the front foot/tube joint. This measures 712mm.
Photo 5 shows the ceiling screw cap in place.

I dabbed some Waxoyl on the holes in the roof. The rivnuts are tight enough to seal on their own without any additional sealant. The closed cell foam sandwiched between the foot and the roof won't let anything through. Passed the high pressure hose test!

Good luck

Ron

Thanks for all the info. Do you know what the maximum load the roof on the high top Doblo can take?