American Sliding Sash Window
American Sliding Sash Window is the most widely used typical window in the United States. Its security, air tightness, water tightness, sound-insulation and heat insulation performance are excellent. Using American rolled strips rolling motion system, operating smoothly without noise, the active window can clean convenient. The width is narrow and high window can also give you a satisfying opening level, handy with vetilates gently, removes the indoor pollution and keep natural lighting.