Load lock chamber

A semiconductor processing tool comprising:

• a frame forming at least one chamber with an opening and having a sealing surface around a periphery of the opening;
• more than one door configured to interact with the sealing surface for sealing the opening, the door having lateral sides substantially perpendicular to the door sealing surface and substantially perpendicular to a transfer plane of a substrate transferred through the opening;
• and
• at least one drive for each door, each door being independently operable and each drive being located on the frame at least partially laterally alongside of at least one of the lateral sides that are substantially perpendicular to the door sealing surface and substantially perpendicular to the transfer plane of the substrate transferred through the opening, and at least one of the drives having actuators located at least partially in front of the sealing surface and the drive actuators being coupled to at least one of the sides of the door for moving the door to and from a sealed position;
• wherein the at least one drive is located outside of a substrate transfer zone for transferring substrates into and out of the at least one chamber through the opening.