Barrels & Crates, Incorporated

 is, as its name implies, a barrel and crate manufacturer with a factory in Gravity Falls. It is seen in "Fight Fighters" when Rumble McSkirmish chases Robbie there and throws barrels at him that makes him jump on the balconies.

Trivia

 * The layout of the outside of the building and Rumble throwing barrels down the side of the building are a reference to Donkey Kong.