Today's building codes state spaces using furnaces have to have method for getting back together combustion air since it used. Newer homes have ducting installed, during construction, that literally brings fresh air from the outside for an area close to the furnace. This ducting, usually called comprise air duct, or combustion make-up air, is sized according to the capacity from the furnace. Aleef?s paintings also features some glimpse of the first orientalist Italian art works. His beautiful paintings of Jerusalem also depict the approach to life and culture of resident and non-residents during his time. Most of his prominent works possess a particular significance to that particular era?s local art movement; some of his popular paintings will be the landscape paintings of various places in Jordan. During his days in Jordan, Aleef build his first studio to show art to his fellow artists. Some of his students are Mohanna Durra and Rafiq Lahham who later became a few of the celebrated artists of last century.