Elements of door accessories, serving for convenience of opening and closing the door. The handle can be part, through which driven a latch, and may be a separate element that is not related to other door mechanisms.
Door handle actuating the latch through a square adapter. Separate handles have rosette through holes which are attached to the door leaf.
Variety stationary door handles. Pull handle has no functional connection with other door mechanisms and doesn't provide fixation of the door in the door frame.