A door that disappears into the cavity of a wall is called a pocket door because it slides away and doesn’t require room to open. A pocket door has long been the solution for a small room or tight space, because it takes up virtually no wall space and requires no room to swing out and open like a traditional door. This feature makes a pocket door the ideal choice where space is at a premium, but privacy is required. And it’s often used as a room divider to separate two rooms like a dining room or a parlor, often found in classic old homes.
The door is actually a system that includes hardware and special framing, which is sold separate from the door; it can be flat, paneled, hollow or solid, so its style can be matched to other wood trim and doors in a home.