When you’re hanging a deco medicine cabinet, it’s in your best interest to make sure that the cabinet hangs at about eye height. This will make sure that it’s not so high that you’re not able to make use of the tallest shelves, but not so low that it looks awkward or un-aesthetic in your bathroom.
If you’re wondering what a good average height is, it’s a good rule of thumb to assume that a medicine cabinet should only reach a height of six feet (or 72 inches) above the floor. If you’re taller or shorter than average, or if the deco cabinet has lots of flourishes and scrolls on it, then feel free to adjust as needed. Your goal should be that, if the medicine cabinet has a mirror, your face should be in the top center of that mirror, and the cabinet should not be too close to any soap dishes or outlets that are also in your vanity area.