For my trailer shelves I attached a 2x6 on the front to give them some depth before I sheeted over them so if they leak it'll stay on the shelf.Apparently they're called F style jugs. Surprisingly I can't find purpose built carrier/containment for them.
I'm thinking the state requires secondary containment for these, haven't looked it up yet. I use a plastic tub at home but that doesn't hold them very tight on the road.
Thanks! I'm going to have to probably go with something like that.It was "ridged brand" when I bought mine but I'm pretty sure it's the same size and it holds 4 of the 2 1/2 gallons. Or other siZes if u want.