With the first production hidden door, you are no longer forced to pay custom prices and suffer through long delays for a hidden door. The InvisiDoor can be used to conceal a seldom used room, create a hidden safe room, or turn a door into a functional storage and display area. Sized to fit standard openings for a 36" door. Simple installation with our unique pivot hinge. Can be hinged left or right as an inswing or outswing.(Instructions included). Made with only premium plywood and domestic hardwoods. Flexible design with one fixed shelf, and three adjustable shelves.