How big are the biggest glass bottles of Jim beam?

It's important to note that:

* This is not a true "magnum" size. A magnum is 1.5 liters, so this is actually bigger.

* There are larger bottles for promotional purposes. For example, Jim Beam has produced 3-liter bottles for special occasions or events, but these are not typically available for purchase.

So, while the 1.75-liter "Decanter" is the largest you'll find on shelves, keep in mind that even bigger bottles exist but are harder to come by.