Pocket doors are the most common style of wall-storing doors. Pocket doors are sliding wooden doors that disappear into a hollow space in the adjacent wall when the doors are open. Depending on the needs of your space, you may opt for a single pocket door that slides in one direction or a series of two pocket doors that slide in opposite directions. Pocket doors are useful options between rooms sometimes used for a larger living space; consider a pocket door between a formal dining room and a living room so that the door can be opened during entertaining or closed during sit-down dinners.
Traditional sliding screens are staples of Japanese architecture. The sliding screens are often made of a wooden frame and a layer of screen-printed silk or other fabric. The sliding screens often slide against the length of the wall, but sliding screens are easily modified into pocket-style doors that disappear into the wall when the door is opened. Sliding screens are more delicate and decorative options for interior sliding doors; when the doors are closed, they look more like wall art than a traditional door or wall. Most screens allow some light to pass through the wall, so they are better options if you don't require soundproofing or light blocking.
Doors that slide into walls are space-saving options because the doors don't swing into a living space, but they do require additional planning to ensure they can be properly installed. The wall space must be both thick enough and long enough to accommodate the size of the door. Not all walls are suitable for pocket doors; load-bearing walls are often not appropriate because hollowing the core of the door reduces the structural integrity. Walls must be clear of wiring and plumbing as well.