I know it's hard to see, but I"ll get some better pictures, this is all I have right now.
You can kind of see how I cut the doors in the "top" of the barrel.
I then bolt 2 eye bolts and use big fender washers (so it won't pull through) and lock nuts, 1 right above the door, and 1 at the other end of the barrel.
"S" hook connects 8 ft chain to eyebolt, and is pinched closed.
Other end of chain goes over top rail and back down, here I use a chain link that screws open and closed, to attatch chain back throught itself.
This is how you can adjust the height of the front or the rear of the barrel from the ground. Just unscrew link to lengthen or shorten chain, then tighten back so it's secure.
I like the front about 8 inches from the ground and the rear about 10 inches.
This way if water gets in them it all drains to the front of the barrel where there is a drain hole drilled.
The dogs seem to get in the very back, so I want the water running out the front.
Sure makes it easier on jls41 when she hoses out the kennels.