A collapsible door elevator, also known as a collapsible gate elevator, is a type of elevator that features a folding gate or door on the front of the elevator car. This type of elevator is commonly found in buildings and is often used for freight or service elevators.

The collapsible gate is designed to fold inward as the elevator car moves between floors, providing additional space for larger or awkwardly shaped items to be transported. When the elevator is not in use, the gate can be closed and locked for added security.

However, there are elevators using the latest technology. Building owners should consult with a qualified elevator contractor to determine if a collapsible gate elevator is suitable for their needs or if upgrading to a newer model is necessary.