Feature: Products are available in Aluminium. Preglazed in factory. (Optional) LYS is the leading expert in manufacture of high performance, quality sliding sash windows. Compared to ordinary casement windows, sliding sashes provide improved top and bottom ventilation in rooms; stagnant air exhausted at the top and fresh air is drawn in from the bottom, and cleaning the glass is very easy from inside of your room. Our unique weight counter-balanced system ensure smooth and easy gliding of the sashes and maintenance free operation compared to the old spring balanced systems. Our units are fitted with rot-proof polyester rope, stainless steel pulleys, satin chrome lifts and catches with stainless steel screws. Good weather seals fitted around the sash ensure rattle and draught free windows and are available in white or brown for timber units Sliding sashes are counter balanced for 4mm glass (SS1±3) or 6.38 safety glass (SS4±7), based on standard building regulations as well as double glazed glass based on standard building regulations. Aluminium standard colours of white, charcoal and bronze. We can replace existing steel, aluminium, wood or uPVC windows and doors. Visit our factory showroom to discuss your requirements with our sales and technical staff. All products carry a 5-12 year warranty. Please refer to terms and conditions for clarity.