Door made of folded sheet metal

Door for a refrigerator or freezer comprising an element folded of a pre-painted sheet blank (11), which element shows a rectangular front part (12) with upwardly folded side parts (14), the front part forming the outside of the door, characterized in that the element shows corner parts (15), which are located between adjacent side parts (14) and are connected with these in to an adjacent corner (13) of the front part, the corner parts (15) being folded inwards over the front part (12), so that the respective corner part (15) forms a first and a second fold (19) with the respective adjacent side part (14) and forms a third fold (20) over the front part, which three folds (19, 19, 20) converge at the adjacent corner (13) of the front part (12), wherein the respective corner part (15) forms a 45.degree. angle with adjacent side parts (14), wherein the respective side part (14) provides an inwardly directed first part (16) which is parallel with the side part, and a second part (17) which is directed inwardly from the first part and is parallel with the front part (12), said second part (17) defining a space (22) with said front part (12) therebetween, and wherein an expanding and hardening plastic foam fills up the space (22).