Energy Saving Twin Double Double Hung Windows

Double-Hung Windows: Pros and Cons

The double-hung window is the most common style of window available today. And the reason is simple: double-hung windows are easier to clean.

Double-hung windows with tilt-in (also called tilt-out) design can be cleaned from inside the house. With single hung windows (and older double-hung windows without tilt-out function), it's difficult or impossible to clean the outside of the lower sash from indoors. You have to reach it from the outside--easy if the window is ground-level, difficult if the window is upper-level.

Single-hung windows can also have a tilt-in or removable lower sash, but you still have to reach outside the window to clean the upper sash, a perilous task.

The ability to open the upper sash on a double-hung window is another advantage in terms of airflow. Sometimes it's nice to open the upper sash and not have air blowing in from below. You can also create a minor recirculating effect by opening both sashes about halfway or less. In theory, this allows warmer air to escape through the upper sash and cooler air to enter through the lower sash. But in reality, this natural convection has little cooling effect on a room.

Finally, for homes with small children, double-hung windows' top opening sash allows you to keep the lower sash closed, yet still have airflow coming through the open top.

Naview factory covers more than 600,000 square meters, equipped with anodizing vertical line, powder coating vertical painting line, 5000T pressing machine, automatic vertical warehouse equipment, etc.

A completed production system has been established: casting, extruding, anodizing, electrophoresis, powder coating, PVDF, heat-transfer wood grain, polishing, brushing, heat insulation (stripping & glue injection), doors & windows fabrication, industrial extrusion finish machining, automated logistics systems, etc. Naview has basically realized the automation of the production process, improved efficiency and quality with high technology.

Q: How to get quotation?

A: The final price depends on specific requirements and designs. Contact us and we will send you our catalogue. Pls provide us with as much details as you know, concerning your application, design, size, thermal or not, color, quantity, surface treatment, trade terms and etc. Then we can make the quote.

Q: How long for production and delivery?

A: Around 20 days for production. Delivery time varies from 15 to 40 days depending on the port of destination.

Q: What is your payment terms?

A: 30%～50% of the total amount by T/T as deposit. The remaining balance is completed before delivery.

Q: Can I come to your factory before I make the order?

Yes, you are welcome to our factory(Foshan, Guangdong). If you like, we would like to pick you up.

Q: What is your MOQ?

For window and door, usually MOQ is 20 Square meters.

Foshan Naview New Building Materials Co., Ltd. established in 2005, is a large-scale enterprise, which integrates research & development, manufacturing, and marketing of aluminium profile products, specializing in manufacturing architectural, decorative and industrial aluminium extrusion products.

Since its establishment, NAVIEW is committed to developing leading and long-term sustainable building solutions, put all efforts into being an integrated manufacturer of a wide rage of aluminium building materials. With R&D, designing, manufacturing, and QC, we’ve supplied our building materials worldwide to support hundreds of new or rebuilt large construction projects.

We oversee every step in the manufacturing process, not just the assembly and installation, we’ve also established a sophisticated and efficient QC system to ensure the quality of our building material products.

Product Series:

• Aluminum Doors and Windows
• Aluminium Formwork
• Aluminium Extrusions
• Glass Partition
• Metal Trim

Meanwhile, being the leader of the Chinese machining industry, NAVIEW has chaired and participated in the drafting of many National & Industry Standards. It’s an exciting, rewarding business to be in, and we’re committed to growing and thriving for the benefit of all of our stakeholders.

NAVIEW factory covers more than 600,000 square meters, equipped with an anodizing vertical line, powder coating painting vertical line, 5000T pressing machine, automatic vertical warehouse equipment, etc.

A complete production system has been established: casting, extruding, anodizing, electrophoresis, powder coating, PVDF, heat wood grain transfer printing, polishing, brushing, heat insulation (stripping & glue spraying), doors & windows fabrication, industrial extrusion finish machining, automated logistics systems, etc. NAVIEW has basically realized the automation of the production process and greatly improved efficiency and quality with high technology.

With an annual production capacity of 300,000 tons, our products are widely used in construction, machinery, electronics, ships, transportation, and other fields. NAVIEW has gained more than 100 patents, for more than 2,000 series and 50,000 specifications. With its excellent product quality and research & development capability, "NAVIEW Aluminium" products have been sold well in China and more than 50 countries and regions, winning support and trust from domestic and foreign customers. Our two production bases are equipped with highly-qualified R&D and testing centres, international advanced testing equipment, which successively passed ISO9001, ISO14001, OHSAS18001, Qualicoat, CQC energy-saving products and other certifications.

NAVIEW is constantly integrating innovative ideas and inspiration into new product research and development, to maintain the company's leading position in the aluminium machining industry.

Take “build the first-class and world-famous brand” as our goal, “integrity, diligence, unity, innovation” as the new spirit, NAVIEW determines to create a new pattern of aluminium industry superior products quality, excellent service and dedicate to provide global customers with professional services.