Abstract: A substrate transfer door assembly includes a body, one or more radiating elements, a member, and at least one lifting coupler. The body includes a central portion. At least the central portion of the body operates as a substrate transfer door and covers at least one of an opening of a liner or an opening of a chamber wall of a substrate processing chamber. The one or more radiating elements radiating heat away from the body. The member extends from the body. The at least one lifting coupler is connected to the member and movable in a vertical direction between an open position and a closed position to cover the at least one of the opening of the liner or the opening of the chamber wall with the central portion of the body.