Mural channel element for the outer connection of heating appliances equipped with burners. (Machine-translation by Google Translate, not legally binding)

摘要

Wall channel element for the external connection of heating devices equipped with burners, characterized by two inner and outer tubular elements respectively (3, 4; 1, 2), sliding by insertion of one in the other as a telescope, in which case, the elements of the inner tube are covered in the entirety of its perimeter by the outer tube, and by projections in the form of a neck (6, 7) in the elements of the outer tube, which are attached to the inner wall or the faºade and in which protective grilles or fasteners for the heating device are to be fixed, which is characterized by the fact that when it is assembled, the elements of the pipes corresponding to the wall and to the facade are contracted by, braces (twenty-one). (Machine-translation by Google Translate, not legally binding)