A crossflow condenser is an older and somewhat dated condenser design. The design is T-shaped and sits atop a column still. Vapor flows across a set of water filled tubes. The vapor condenses on the tubes and drops to the bottom of the condenser and is then sent back to the boiler generating more reflux or is drawn off at the product end. The shotgun condenser can be though of as an inverse, vertical version of a crossflow condenser.