The new Unisource EvenBake™ Airflow System has no air louvers in the baking chamber, which means no adjusting to achieve an even bake from top to bottom on the rack. The exclusive airflow speed setting prevents product drying, from delicate pastries to the heaviest baked products. You can save thousands of dollars on adjustments by upgrading to an oven without louvers, the company says. The oven includes a lifetime warranty on the heat exchanger and dual high-capacity steam system. For more information, call 888/443-8782.