Abstract: A stove comprises a combustion chamber and a window disposed at the front wall of the combustion chamber. The stove further includes a device disposed at the front wall of the combustion chamber for directing air into the combustion chamber across the inner side of the window and in a downward direction. The device can form, across the inner side of the window, a screen of air which has a width approximately equal to the width of the window. The device includes a longitudinal chamber and a longitudinal slot in flow communication with the longitudinal chamber. Disposed within the slot are: a cylindrical register which can be rotated about its longitudinal axis for controlling a flow amount of the screen of air across the window; a profiled piece having air passage openings therein; and a flexible sealing leaf engaging, on one side thereof, the cylindrical register, and on another side thereof, the profiled piece.

Abstract: A cover for a heating body comprising a thin wall at least partially screening the heating body from a region outside of the heating body. The thin wall comprises a polymeric material being substantially rigid and substantially resisting permanent deformation at temperatures from 100.degree. C. to 130.degree. C., the polymeric material further substantially resisting infrared absorption at wavelengths corresponding to black-body temperatures of 200.degree. C. to 500.degree. C.