| After-sales Service: | Online Technical Support |
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| Warranty: | More Than 5 Years |
| Material: | Solid Wood & Top Quality Aluminum Profiles |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
| In this series of products, our best-selling profile is alu-clad wood, because the crank windows are the classic design and high-end products, customers don't just want the retro look, they also want good energy-efficiency performance. Solid wood is the best insulation profile, it is favored in many residential applications because of its appearance and traditional place in house design. From a thermal point of view, wood-framed windows perform well with frame U-factors in the range of 0.3 to 0.5 Btu/hr-sq. ft-°F. But the disadvantages are also obvious, solid wood is more prone to damage and corrosion, requiring higher maintenance costs, so we clad the exterior face of the frame with either vinyl or aluminum, creating a permanent weather-resistant surface. |
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| Doorwin's Hardware & Accessories For the Hardware System, Doorwin uses Siegenia multi-point locks, hinges, and handles from Germany. With top burglar-resistant, the handles come with a long backplate in solid aluminum. The cylinder is practically inaccessible and the long backplate is almost impossible to remove. And the high-quality components, each is capable of sustaining 400lbs for high security and longevity. The friction stay is tested for more than 400,000 cycles, to put this in perspective, a window that is opened and closed 10 times a day should last at least 100 years before failure. The multi-point locks system also provides better sealing and contributes to the insulation performance of the whole building. Together with Technoform Bautec's insulation edge bond and sealant strips, these make up the top insulation and energy-saving performance of our products. |
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| Doorwin's Full-custom Specialty Shapes Servic | |
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Doorwin respects your visions and offers true freedom in design. We manufacture products based on your ideas and needs, every part including special shapes, hardware styles, and color choice is totally no additional charge. Everyone should understand the high demands of manufacturers that customize specialty shape windows, general manufacturers will charge extra fees for customization requests, but not Doorwin. Set yourself free and choose Doorwin, to experience the best bespoke fenestration service. By the way, all designs and products are under the USA building codes and will pass your local inspector's verification. |
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| Doorwin Exclusive Simulated Divided Lites With Warm Spacers Doorwin's simulated divided lites are permanently adhered to both sides of the glass and are available with a Technoform Bautec™ high-performance spacer bar installed between the glass to create even more depth that resembles authentic divided lites. All these detailed decorations are customized to suit your aesthetic requirements without any loss of energy efficiency. |
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| Free Design Assistance With our own expertise, we provided the no-cost design development and contract documentation with CAD & BIM drawings, including elevation, details about the project, and installation help. Before production, we will provide accurate sample drawings, which will clearly show the cross-sectional pattern, size, opening method and direction, pattern of the warm spacer, and the installation nodes. We will not go into production until you have signed off on the drawing to ensure that you receive a final product that meets the exact requirements of your project. |
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| Save your money on the installation costs 01 / Easy Installation Firstly, is easy installation. We have several international patents to reduce clients' labor costs, such as our unique flanges and assembly type tubular design. It helps to easily install the windows. You cannot easily find the nailing flange in other companies, which is what sets us apart from our Chinese counterparts is that all our products are equipped with nail fin structures for quick and easy installation. Labor costs during installation may exceed the window and door prices, therefore, the longer the project takes, it means you are losing money. We help our customer make the work done in a shorter time. In this way, we save more money for them. |
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Suppliers with verified business licenses
Audited Supplier 
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