On Sat, 5 Feb 2011 09:10:04 -0500, BAR wrote:


Empty tank is 18lbs. Add 15lbs of propane to get your 33 lbs.


Aren't the tanks called 20lb tanks because that is their capacity, the
amount of propane that they can be filled with. But, nobody every fills
them to rated capacity.

Supposedly for safety reasons.