: This usually refers to a "Double Hung" configuration. In windows or doors, it means both sashes or panels are operable (can move up or down).
If your request is about a specific , pieces by Sheanimale frequently utilize solid wood or composite materials to ensure a "solid piece" feel for hanging wall art or furniture. sheanimale two hung
If you are looking for specific home hardware, retailers like Home Depot carry many units. : This usually refers to a "Double Hung" configuration