To sum up, the window has become an ideal choice for modern homes thanks to their excellent hurricane-proof design, high-quality Aluminium alloy materials, convenient push-pull operation and good lighting and ventilation effects. The quality of our products is unquestionable. We have obtained NFRC international certification. Meanwhile, more than 5 years quality warranty is provided. We also provide after-sale service. Usually return and replacement, online technical support, free spare parts. The delivery time is about 20 to 35 days, or determined by special quantity. Single package size is 80X8X60 cm and single gross weight is 30.000 kg. For the packaging methods, we choose suitable package and reinforce for the selected quantity when loading and transport. Please check the official website for more details. If you have any further questions about this product, please don’t hesitate to contact us. https://www.shaiyia.com/