I have a 14.00" Ceiling but if I could have gone to 16.00" I would have (city wouldn't allow a higher wall). 14.00" ceilings are fine for most anything inside on a lift, but with a 2 foot minimum for roll up doors it gives me a max door opening height of 12.00' which is boarder line for some of the taller RV's air conditioning units etc. Not an immediate issue, probably ever for me, but if I sell it all someday it could be one for a future owner.