Doorwin 2023 wooden window frames grille design wood casement window white Aluminium double swing louvered door and windows


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New Construction   Remodeling   Replacement

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Mansion by the Water, Seattle, WA

On the picturesque Bainbridge Island, a residential mansion stands tall and proud, boasting its three floors and breathtaking views of Pudget Sound. It's a stunning piece of architecture that blends harmoniously with the surrounding nature, offering an oasis of peace and serenity.

The mansion's proximity to the water offers unparalleled views of the sound and the Seattle skyline in the distance. Our casement windows on every floor of the house provide a seamless connection between the interior and exterior, allowing the homeowner to enjoy the stunning scenery from the comfort of his home.

As the exclusive provider of windows and entry doors for this magnificent mansion, Doorwin takes pride in contributing to its beauty and functionality. Our push-out casement windows perfectly complement the house's elegant design, adding a touch of sophistication and luxury to every room.

What we did

Whether it's the seamless integration of the windows or the striking presence of the solid wood entry door, Doorwin's contributions to this residential mansion have transformed it into a true architectural marvel. The combination of our high-quality materials, skilled craftsmanship, and dedication to excellence has resulted in a home that not only captures the beauty of its surroundings but also stands as a testament to timeless elegance and exceptional quality.

French Windows (Push-Out Casement Windows)

One of the standout fenestration elements in this residential mansion project is our exquisite French windows, specifically the push-out casement windows. These windows not only enhance the architectural aesthetics but also offer exceptional functionality and performance.

To elevate the property’s performance and security, we incorporated German-imported hardware that meets the highest industry standards. These premium-quality hinges, locks, and handles ensure smooth operation, enhance security, and add a touch of sophistication to the overall design.

High-Performance Materials

To ensure long-lasting durability and exceptional performance, these windows are constructed with a combination of premium materials. The frames are meticulously crafted from oak wood, known for its natural beauty and strength. The wood is carefully selected and treated to withstand the challenges posed by the coastal environment, including moisture, corrosion, and temperature fluctuations.

The thickness of the aluminum cladding plays a crucial role in enhancing the structural integrity and longevity of the windows. With a thickness of 1.8mm, the aluminum cladding offers exceptional strength, ensuring that the windows can withstand strong winds, heavy rain, and other external forces that may be encountered in coastal areas.

Technoform Bautec™’s Sealing Strip

The sealing strip is a vital component that plays a crucial role in ensuring optimal thermal insulation and weather sealing. It is strategically placed between the sash and the frame of the window, creating an airtight seal that prevents drafts, heat loss, and moisture infiltration.

By integrating Technoform Bautec's high-performance sealing strip into our French windows, we are able to minimize heat transfer and maintain a more stable indoor temperature. This means that during colder months, the windows help to retain heat inside, reducing the need for excessive heating and resulting in energy savings. Similarly, during warmer months, the sealing strip prevents unwanted heat gain from outside, keeping the interior cool and comfortable.

Custom Divided Lights

Divided lights are decorative elements that add charm and elegance to windows. They create the illusion of multiple smaller panes of glass within a larger window, enhancing the visual appeal of the overall design. Our custom divided lights are available in various styles, including GBG (grilles-between-the-glass), simulated divided lights, and authentic divided lights.

GBG, or grilles-between-the-glass, is a popular choice among homeowners looking for a sleek and low-maintenance option. With GBG, the grilles are permanently sealed between the glass panes, providing a seamless and easy-to-clean surface. This design offers the aesthetic appeal of divided lights without the need for frequent maintenance or cleaning.

Simulated divided lights offer a similar visual effect to authentic divided lights but without the individual glass panes. Instead, they feature horizontal and vertical bars applied to the exterior and interior surfaces of the glass, creating the appearance of separate smaller panes. Simulated divided lights provide a classic and timeless look, adding character and charm to your windows.

Why Doorwin?


We take pride in providing our customers with top-quality windows and doors that meet the highest standards of performance and durability. Our commitment to quality is reflected in our use of the best materials, such as fully tempered glass and high-quality hardware from reputable German brands. We believe that our customers should never have to compromise on quality, and that's why we offer a 10-year warranty on our products‘ hardware parts. In addition, our TPS glazing technology ensures that our insulated glass units are free from air leakage and fogging issues, backed by a 25-year warranty.

Don't just take our word for it - our customers have been thrilled with the quality of our products and service, and we have the testimonials to prove it. We are proud to have built a reputation for excellence in the industry, and more and more contractors and builders are turning to us for top-quality windows and doors at a competitive price.

Factory-Direct Pricing

At Doorwin, we understand that cost is one of the biggest concerns for our customers. That's why we're committed to providing transparent pricing for all of our products. Our pricing is straightforward, and what you see is what you get. There are no hidden fees or additional costs to worry about. We understand that our customers may compare our prices with local manufacturers. That's why we're confident in the value that we offer. We're proud to say that we can offer top-quality products at a fraction of the price of local merchants in Europe and America. Our products are manufactured in our state-of-the-art facilities in China, where we've invested in cutting-edge technology and streamlined production processes to ensure that we can offer our customers the factory-direct value.

We believe that our commitment to quality and transparency sets us apart from other manufacturers. We want our customers to feel confident in their purchasing decision, knowing that they're getting a high-quality product at a fair price. So whether you're looking for windows, doors, or any other products, you can trust Doorwin to provide you with the best possible value.

Design Assistance Service

In addition to providing top-quality windows and doors at affordable prices, we also offer design assistance services to help clients accurately control their budgets. Our expert team can analyze your overall plan and provide a schematic design that helps determine which products fit within your cost parameters. We understand that cost is often a primary concern, which is why we offer recommendations such as using lower-cost products in inconspicuous locations to reduce the overall budget. For example, if a room is not exposed to long periods of sunlight, we may recommend not using Low-E glass. In unimportant rooms such as toilets or storage rooms, we may suggest using PVC or aluminum windows instead of solid wood windows. Our goal is to ensure that our clients can achieve their design vision while staying within their budget.

Contact Us

Thank you for taking the time to learn more about Doorwin and our commitment to providing top-quality windows and doors at unbeatable prices. We believe that every project is unique, and we are dedicated to working closely with our clients to help them achieve their vision while staying within their budget. If you have any questions about our products or services, please do not hesitate to contact us. Our team of experts is always ready to assist you in finding the perfect windows and doors for your project. Thank you again for considering Doorwin as your trusted partner.

DOORWIN W+ Casement Windwo


A casement window sash is
hinged on the side and
opens either to the left or the right.

Multi-point locking system ensures a
tight seal and
security from top to bottom

Durable hardware for easy operation
even at large sizes


Aluminum facing outdoor, can play the role of anti-corrosion, rain proof, moisture-proof

Solid wood interior, can match with furniture very well, already beautiful have use proof, moisture-proof



The Easy Way To Compare
Energy Efficiency.

If you’d like a quick, accurate way to compare the energy efficiency of windows and doors,just look for the national fenestration rating council (NFRC) information.

Germany Henkel Glue
High Strength Waterproof Wood Glue



Less Than 30% Of The Essence Of Each Log
Is Selected By Doowin

Whichever you choose,
Our wooden windows will be naturally appealing and ture to
your home’s architectural design.

Aluminum Clad Wood Window


Aluminum Clad Timber Windows Have an Extruded Aluminium Exterior,
Which Can Be Powder / Fluorocarbon / Anodised / Woodgrain Coated With Industrial Strength Paint
For Superior Resistance To Fading and Flaking.


Ergonomic Design

Excellent Anti-Theft Performance RC2


No Scratches / Flaking / Fading

Three Times of Primer Coating and Two Times of Finishing Coating
More Healthy And Environmental Protection


High Energy-Efficiency

No Air Leakage / No Fogging / More Silent / High Pressure Resistance

LOW-E Technology Can Helps Homes Stay
Cooler In The Summer And Warmer In The Winter.


Technoform Bautec’s TGI-Spacer M – Our warm-edge spacer technology minimizes thermal bridging and has one of the lowest failure rates in the industry.


Fully Tempered Glass


180% Better Sound Insulation Effect


Roll Out Of Sight When Not In Use

Improve Your View And Let In More Light And Fresh Air With
Your Choice Of Innovative Screens.

Hydraulic Damping System-make The Rebound Rate More Uniform


Anti - Corrosion, Insect - Proof, Keep Wood Physical Properties More Stable

After Wood Finger Connection And Profile Painting, Microwave Treatment Technology Should Be Adopted To Effectively Remove Residual Organic Matter Such As Sugar And Starch Inside Wood, Improve Water Content State, Solve The Problems Of Anti-corrosion And Insect Prevention From The Inside Of Wood, And Keep The Physical Properties Of Wood More Stable.


5 Layers Packaging Guarantee No Breakage

1 Adhesive Protective Film

2 Buffer Bubble Film

3 Hardboard

4 Stretchable Plastic Wrap

5 Non-Fumigation Plywood-Crate

10 Labels Provied Clear Instructions Save Installation Time

Front And Back, Up And Down
Will Not Install Reversely

Provide Installation Guidance

Successfully Passed The
Verification Of The Inspector

Rapid Product Positioning

Q & A

01 Who is Responsible
for the Customs Clearance?

Arrival of Goods

Submit Customs Clearance
Documents to Customs

Tax (Paid By Us or By the Client)

Pick Up the Goods

02 What Should We Do If We
Do If We Buy Goods, But We Don’t Know A Forwarder?

We,doorwin, Have Our Own Shipping Agent And Forwarder,who Could Take Good Care Of The Shipping, Custome Clearance, Documents, And Delivery To The Warehosue Or Job Site.

03 What Is The Delivery Time?

For Regular Purchase Orders, The Productions Time Will Be 3~5 Weeks From The Date Of Getting The Approved Shop Drawings. Shipping Time Will Take Another 4~5 Weeks From Our China To Local Seaport Or Warehouse.

04 What Is Your Payment Items?

Generally,50% Deposit Payment By Bank Wire Transfer Or Credit Card, Balance
Payment Before Shipping Is Accepted.