The invention relates to an oven (1), especially to a domestic oven, having a cavity (2) and a carrier structure (3, 4) connected with the cavity (2), wherein the carrier structure (3, 4) comprises at least two side panels (3) arranged in the side regions (5) of the oven (1) and a component plate (4), wherein the component plate (4) is connected with the side panels (3), wherein the side panels (3) extend in vertical direction (V) and in a first horizontal direction (H) and wherein the component plate (4) extends in a horizontal traverse direction (T) perpendicular to the first horizontal direction (H). To eliminate tensions in the carrier structure due to thermal expansion in an easy and cheap way, the invention is characterized in that the component plate (4) has at least one carrier extension (6) extending in traverse direction (T) which extends in a corresponding first opening (7) with at least one bearing surface (8) in the side panel (3), so that a relative movement in traverse direction (T) is allowed between the side panel (3) and the component plate (4).