Vertical aluminum profile sliding window double glazed double hung aluminum windows with grilles

Q: Are you a trading company or a manufacturer ? A: We are manufacturer and have our own trading company, which engaged in high quality windows & doors manufacturing for domestic & abroad market. Q: What is your lead time? A: 20-35 days upon of deposit received and shop drawing confirmed (We arrange shop drawing before manufacturing to double confirm all the windows details). Q: What is the standard size and design of your windows and doors? A: As windows and doors are customized products. we manufacture according to your specific demension special requirements . And we also have engineers to give improvement suggestions. Q: What about your window systems ? A: We use Germany high insulation system with thermal break technology. Q: Will we need to install the glass (onsite glazed) or do your windows come with the glass installed? A: We will install glass at factory based on windows/doors dimension to make sure they can be safe during transportation and it is easy for our buyer to install the whole windows/doors. Onsite glazed are recommended for big sized products. Q: Do you know what is a U-Factor/Value? The U-factor/Value measures how well a fenestration product prevents heat from escaping a home or building. The lower the U-Factor/Value is, the better a product is at keeping heat inside the building, thus is a better insulator. The most energy efficient window we made is Germany PHI certified passive housing standard window and door, which Uw is 0.79 W/ m2* K(metric), turns to U factor is 0.14 ( imperial). Q: What is Solar Heat Gain Coefficients? That measures the fraction of solar energy transmitted and tells you how well the product blocks heat coming into the house caused by sunlight. SHGC is measured on a scale of 0 to 1; values typically range from 0.25 to 0.80. The lower the SHGC, the more a product is blocking solar heat gain. Blocking solar heat gain is particularly important during the summer season in warmer climates. By contrast, people in cooler climates may want solar heat gain during the cold winter months to lessen the cost of heating the home. Q: What is your warranty ? What do we do in case of problems? A: 10 years quality warranty is provided, including frame unfading or peel-off, hardware and accessories working properly under correct operation. 10 years warranty for German hardware. In case of our quality problem, we will provide replacement by international courier. Immediate delivery of replacement parts with available in stock, and if not stocking, the time should be depending on material ordering time which is normally 10-15 days.