Amerimax now offers an ultimateperformance glass, that just might make all other low-E glasses obsolete. This unprecedented triple layer of silver, blocks out 95% of the suns damaging UV rays, while maintaining attractive visibility. So it keeps the heat out while letting light in. Neat glass is an innovative coating that lets nature clean your windows. A Silicon Dioxide layer creates an ultra smooth surface and Hydrophilic action to disperse water evenly or “sheet off”.