The Bertazzoni 406657 Range Inner Door Glass used to protect the oven door interior while supporting proper heat containment during cooking. This inner glass panel is installed on the cavity-facing side of the range oven door and forms part of the door’s multi-layer construction. It used to withstand the heat generated inside the oven while providing a smooth surface that supports the door’s overall structure. When properly installed with the other door components, it contributes to effective insulation and used maintain normal oven operation. Replacing cracked, chipped, or damaged glass can used restore the door assembly’s condition, appearance, and heat-management function. It is a practical replacement component for maintaining reliable range performance and everyday cooking use.