It is used for a variety of applications in labs or research facilities such as sterilizing, drying, annealing, baking polymides, etc. A lab oven may vary in size as well as temperatures, from a single cubic foot to 32 cubic feet and above. Some of the common types include horizontal airflow, forced or natural convection and pass-through ovens. Almost all lab ovens are suited to applications in labs, medical facilities or others, depending upon their heating or drying needs. Since all the ovens operate at low temperatures unlike kilns and other industrial oven, they do not feature refractory insulation. However, refractory insulation is present in some high temperature models of lab ovens to provide optimum safe environment.