The door handle or knob is a handle used to open or close a door. Door handles can be found on all types of doors, including exterior doors for residential and commercial buildings, interior doors and cabinets.
There are many door handle designs, depending on the proper use.
Door handles can be made from a wide variety of materials.
For example zamak, porcelain, aluminum, copper.
Door handles have been around for at least 5000 years and its design has evolved since then, with more advanced mechanism, types and designs.
