A spring hinge is a simple device that keeps a door in place. It is a two leaf mechanism with a leaf at each end that is secured to the door frame. It requires only a brief contact between the two leaves to keep the door closed. This type of hinge is generally used on doors that are relatively light.

A PlainJoint Door Hinge is a type of hinged door that is made of either wood or metal and has a flat surface on the interior and one large flat surface on the exterior. They are popular because they offer a quick and easy installation and do not require any sort of cutting or drilling, so the entire process can be done by just one person.