Cooking & BakingHBN5451UC 27" Single Wall Oven, HBN5451UC, Stainless Steel The Bosch Wall Oven Features Genuine European Convection and Heavy Metal Stainless Steel Knobs. Genuine European Convection for Even Baking Results on Multiple Racks. Heavy-Duty Metal Knobs Offer a Premium European Feel. Bosch Wall Ovens are Compatible with Most Competitors' Cutouts. The Wall Oven is Designed to be Installed Flush with your Cabinetry.