For larger bottles such as gallon jugs, a case is typically 4.

He added a gallon jug of red wine from a grocery store.

He produced a gallon jug of water that they half emptied almost immediately.

I've seen guys my age out there and young kids carrying gallon jugs of water.

He got out of the truck and walked toward us carrying a gallon jug.

Some mass, I'd say, to put into a gallon jug.

He reached down under the table and brought up a gallon jug.

The big, gallon jugs she liked were not on display.

"A gallon jug of lamp oil, and an attack from the air with all three birds at the same time."

Tell him to find that gallon jug with the green stuff.