In building industry ,American aluminium sash windows adopt the style of pulling down and pushing up, unlike traditional styles as inside opening, outside opening and sliding. This kind of windows is mainly popular in North America,and  it is also known as the American sash windows.
The windows generally use thermal break technology with plastic injection, unlike European-style bridge wear strip technology. Their hardware concludes heavy lifting rod hardware.

It is well known that aluminium sash window have excellent performance of energy-saving, insulation, dust-proof, noise-proof and wind-proof. And they also have beautiful lines and wide view angle. While open, windows never touch and hurt human body. And their frame are encased to avoid no risk of human falling. So, the safety factor is excellent.

Pulling up and down vertically to open, so that the window have its force focused on the sash of the window frame and the wall. Their load is much less than the casement window. And it is reasonable to narrow the cross-sectional profiles, saving materials, reduce costs, while perspective rate also reased.

Therefore, they are widely used in high-rise buildings in North America.Buy top aluminium sash windows with good reviews at kdsbuilding.com.