A Rollformer is used to form the front and back outer edge flanges of the Oven Cavity. It adjusts automatically for the width variable required. Two (2) Tangent Endformers form the 90° lead and trail ends of the housings. Two (2) Programmed Radius Tangent Forming Units form the 1-1/2″ radius corners to produce the “U” Shape or four (4) sided Full Wrapper Housings. Full Wrapper Housings are then held, and spot welded inline within the Tangent Forming Unit.