It all depends on the manufacturer.
Same goes for the diameter of the top lip,
they can vary by as much as 3/8".
That is why I say, get your lid first!
Take it with ya when you go to purchase a drum.
Originally Posted by seattlepitboss
After a little more research, I have found out that drums come in 19, 18 or 16 gauge steel. The 16 ga. has nearly 50% more steel than the 19 ga. drum. Maybe that's why some drums hold temp better than others?