Product Description This is a Replacement Lid for the following Vacuum Chambers: Best Value Vacs 2 Gallon Aluminum Side Mount Vacuum and Degassing Chamber Best Value Vacs 2 Gallon Aluminum Vacuum and Degassing Chamber Best Value Vacs 3 Gallon Aluminum Side Mount Vacuum and Degassing Chamber Best Value Vacs 3 Gallon Aluminum Vacuum and Degassing Chamber .