A "drink rail" or "cocktail rail" is a deck board or other flat board installed horizontally on top of the deck railing, that makes a wide surface for setting drinks and food on. Many railing systems have an adapter or special brackets that are designed to secure and stabilize a deck board over the top of the rail. The railing posts can either be cut off to allow for the drink rail board to run over the post, or can be left at their original height. If the posts aren't cut off, the deck board would be trimmed to fit the space between posts.
