Lift-off hinge:

is a hinge that can be separated into two parts, allowing a door to be removed without having to take off the hinge. These hinges are useful for businesses where regular deliveries are made through a door, and removing it will allow for more room. A lift-off hinge has a solid pin on the hinge side mounted to the door frame, and a hollow cylinder that fits over the pin attached to the door. The door is removable by simply lifting it up, which slides the cylinder off the pin and allows the door to be removed.

If you need to move the door, you may use a lift-off hinge. And in the past, some furniture could be disassembled by design for traveling, and was called knockdown or campaign furniture. The term “knockdown” came to define portable plastic storage bins and other flexible storage options in the 20th century. This included furniture that could be purchased as boxed individual pieces that were assembled by the homeowner. Earlier versions that used a lift-off hinge for doors evolved from portable furniture used as far back as Roman times for moving household goods. The traveler could assemble the furniture quickly when stopped for the night, and disassemble it easily the next day to resume travel.

A lift-off hinge can be useful as a maintenance item as well. For some reasons, doors may require regular maintenance or repainting, and quick removal and replacement of the door will make this easier. Homes with open floor plans, where walls are kept to a minimum to provide larger living areas, may have doors that can be added or removed as needed for privacy or security.

In OF Hardware, we provide lift-off hinges for various size. You could refer to https://ofhardware.com/portfolio-item/lift-off-hinges-regular-type/