sentences:  For example, in triple glazed windows, SHGC tends to be in the range of 0.33 - 0.47.For double glazed windows SHGC is more often in the range of 0.42 - 0.55.Different types of glass can be used to increase or to decrease solar heat gain through fenestration, but can also be more finely tuned by the proper orientation of windows and by the addition of shading devices such as overhangs, louvers, fins, porches, and other architectural shading elements.