A hot air rack oven (1) in an oven housing (2), for the baking of goods on a rack (4), including an oven chamber (6), a door opening (8), a door (10), the oven chamber includes one or more curved portions wall and has an essentially circular cross-section with respect to a substantially vertical axis of the oven. The door is curved with a slightly larger diameter than the outer diameter of the oven chamber, and is able to slide laterally to one side of the opening, at the outside of the oven, and the sliding door is movably arranged at the oven housing via cooperation, at an upper edge of the door, between an elongated curved horizontally arranged wheel arrangement (12) provided with a specified number N of equally sized wheels Wi and an elongated curved horizontally arranged guide bar (14) provided with N equally sized recesses Ri.