This is the AMACO Excel Kilns - EX-365 single phase with the EZ-lift optional add-on that allows for easy opening and lifting of the lid with its spring-loaded heavy-duty hinge. The firing chamber has a 22 3/4-inch diameter and is 27-inches deep, which is the perfect size for your home studio use.. The reversible slabs ensures that you will get the maximum life out of this kiln. The kiln gives you flexible options on the controller mechanisms. The six Kanthal A-1 elements are some of the best quality heating elements on the market, making this kiln a quality piece of machinery and easy to use.