Raw materials Description: rail parts: aluminum tank (SLDR), stainless steel (RS10). Slider, tail plug: Nylon 6. Framework fittings: zinc alloy. Data evaluation: Function: cycling test by ultra 100,000 rpm. Corrosion resistance: comply with BS EN1670: 1998 Level 4 standard. Product Features: Door limit stays open angle can be adjusted, can be opened up to 90 degrees. Easy to install. The slider is equipped with adjusting screw, the elastic adjustable door open. 335MM length. Applies to most UPVC window.