Perforated pizza pans have several evenly spaced holes on the cooking surface. These holes serve one purpose; they increase heat transfer to the pizza thus reducing overall cooking time. The increased heat transfer also makes the crust crispier. Diameter is the most important thing to consider when looking for a perforated pizza pan. The diameter, of course, indicates how large of a pizza you can make on it. Most standard sizes are available, from personal pan (usually under ten inches) up to large 19 inch pies. You will need a separate tray to serve the pizzas though because the perforated surface does not make for an attractive display. Also, the holes will help heat escape from the pie as quickly as it was transferred to it, and customer wants their pizza to get cold while sitting at their table.