The best example of a combination proofer/oven unit in use can be seen at any Subway sandwich shop. Customers can see dough rising and baking while their sandwiches are being made. Not every commercial kitchen chooses to display their bread making activities but still enjoy the convenience of one machine can that rise and bake their breads. When selecting a proofer/oven combo will need to consider the power type and pan capacity. These units are designed to hold full size pans (18” x 26”) and each cabinet is able to hold a specific amount. Generally speaking, the proofer side will be able to hold a few more pans than the oven. This is because the dough rises a little more when it is baking so less space is available. Also, more space is required to evenly heat each pan. The cabinets will be heated by either gas- or electric-powered elements. You will want to check the inlet size for gas equipment to make sure it will hook in to your main supply line. Electric cabinets run on specific voltages and phases and may need their own circuit.