Abstract: An oven having a tray forming a heating element enclosure beneath an oven liner. The heating element compartment has a rear access opening. A heating element is removably supported by the tray beneath a bottom wall of the oven liner. An access panel is provided for closing the rear access opening of the heating element enclosure. The access panel is secured to the oven liner and the rear edge of the tray is fastened to the access panel. An inner chassis is disposed about the oven liner. The inner chassis includes a rear chassis panel and a chassis bottom panel having a rear edge removably attached to the rear chassis panel. A cabinet enclosure surrounds the inner chassis and includes a removable back wall. Access to the access panel is accomplished by removing the back wall and disconnecting the chassis bottom panel from the rear chassis panel such that the chassis bottom panel may be flexed to expose the access panel.