A door of any size, not panelled, having two flat surfaces. Flush doors are frequently of various types of hollow core construction.
Door produced using two skins or faces separated by a stile-and-rail frame construction at the perimeter. Flush doors may produced with a hollow core or solid core.
Door with a plywood facing over the internal core of wood or wood products. A hollow core door is one with plywood facing over framework without a solid core.
A flush door has smooth surfaces, as opposed to a panel door, which has raised or recessed panels.
A door consisting of a core, cross-banding and flat-face veneers, or a door consisting of a core and flat-face veneers only.