Fireplace with special features (Machine-translation by Google Translate, not legally binding)

摘要

A CHIMNEY OF SPECIAL CHARACTERISTICS, characterized essentially by being constituted by a piece, of frustoconical shape, open at both ends and that in its lower part and in an equidistant direction has a series of grooves provided for coupling to the projections of the corresponding base by effect rotation. (Machine-translation by Google Translate, not legally binding)