Multi-point and tubular door handles are two different types of door handles used in the construction and design of doors.
Multi-point door handles are typically used on exterior doors such as front doors or patio doors. They feature a locking mechanism that secures the door at multiple points along the door frame, usually at the top, bottom, and center. The handle is typically mounted in the center of the door and is connected to the locking mechanism. Multi-point handles are usually operated with a key, but some models may also have a thumb turn or lever handle on the inside.
On the other hand, tubular door handles are more commonly used on interior doors such as bedroom or bathroom doors. They consist of a cylindrical tube that houses the locking mechanism and a handle that is mounted on the surface of the door. Tubular door handles are typically operated with a simple turning mechanism or lever handle, and they usually have a latch mechanism that keeps the door closed.
In summary, the main difference between multi-point and tubular door handles is that multi-point handles have a more complex locking mechanism that secures the door at multiple points, while tubular handles have a simpler locking mechanism and are typically used on interior doors.