Please Choose Your Language
product-banner1
Home Blogs Blogs Custom Casement Window Manufacturers for Large-Scale Projects

If you have a massive building project and need casement windows, your requirements are definitely set to change from those of regular buildings. 

Even if you don’t choose to get custom casement windows, the sheer size and scale of your building will require that you have a solution that works for you. And for that to happen, you need the right commercial window manufacturers who will be able to meet your needs. 

In this article, we’ll look into some of the top manufacturers of casement windows for large-scale window projects. 

What Makes Casement Windows Ideal for Large-Scale Projects?

Over the years, casement windows have become a top choice for anyone looking to implement a massive building project. Whether commercial or residential properties, custom casement windows provide a perfect blend of efficiency, performance, and flexibility in design, allowing you to enjoy the best of all worlds. 

Superior Ventilation Benefits

Casement windows open towards the outdoor environment. As such, they help to catch and direct fresh air straight into the building. The benefits for large-scale buildings include: 

  • Fresher natural airflow, especially for multiple rooms 

  • Consistency in cross-ventilation

  • More comfort for everyone

High Energy Efficiency

When closed, architectural casement windows seal very tightly. This creates an airtight design that offers the following energy efficiency benefits: 

  • Reduced heating and cooling costs for you 

  • Improved temperature control for spaces with a lot of people

  • Strong performance, especially when paired with multiple glazing

Enhanced Security Features

Because they lock from the inside and can feature hook-shaped locks, custom casement windows can create a firmer seal than most other window styles. You also get these benefits: 

  • An almost impenetrable build that keeps would-be intruders out

  • A multi-point locking system available - from DERCHI Windows & Doors

  • Better peace of mind for everyone

4. Versatility in Architectural Design

Architectural casement windows are flexible enough to adapt to different architectural styles. Whether you want a window to fit a modern building style or a traditional home, these windows offer clean lines and clear glass areas that make them perfect for large buildings where uniform aesthetics are a requirement.

Top Manufacturers of Custom Casement Windows 

Without further ado, let’s look into the prominent manufacturers of custom casement windows in the world today. These companies take architectural casement windows to the next level, and no matter what you’re looking to get for your home, you can rest assured that they have your back. 

DERCHI Windows & Doors

  • Location: Foshan, Guangdong, China

  • Company Type: Manufacturer

  • Years in Operation: 25+

  • Number of Employees: 600+

  • Main Products: Doors, Windows, Sunrooms, Custom Building Products 

When it comes to the design and manufacturing of custom casement windows, no one does it quite like DERCHI Windows & Doors. 

Based in Guangdong, China, this company has made a name for itself in the building space. It currently operates a factory that produces over 70,000 square meters of product, as well as an annual output of 300,000 square meters. 

What Makes DERCCHI The Perfect Manufacturer? 

Experts in Their Field

DERCHI has a team of over 600 employees, including technicians and engineers who are able to perfectly understand the intricacies of your project and design casement windows that perfectly fit into it. For any large-scale window projects you might have, rest assured that they have your back. 

A Variety of Products

Besides its impressive staff, DERCHI also offers a sprawling collection of casement windows. The S6 Series Outswing Casement Windows are especially great for outdoor projects, offering a massive view of the outdoor environment and a soundproof, weatherproof build that maintains thermal insulation at all times. 

You can also check out the E6N Big Size Tilt And Turn Swing Windows-Inward, which is a massive aluminum casement window that delivers top-notch protection and ventilation. With complete anti-theft and waterproof capabilities, this door protects you from both intruders and the environment’s harsh effects in extreme weather conditions. 

Both windows come with the CE / NFRC / CSA Standard Certification, as well as the  US/ AU IGCC Standard Glass Certification. And, the best part is that they’re just a tip of the iceberg. For even more custom casement windows, the guys at DERCHI have your back.

A Commitment to Excellence

One factor that has set DERCHI apart from other commercial window manufacturers for over 25 years is the company’s commitment to ensuring quality in both products and service delivery. 

From the company’s ability to cater to both residential and commercial buildings to its provision of different after-sales services, DERCHI focuses on ensuring that you are satisfied on all fronts. All you have to do is reach out to them, and watch them work their magic! 

Andersen Corporation 

  • Location: Bayport, Minnesota, USA

  • Company Type: Manufacturer

  • Years in Operation: 102

  • Number of Employees: 12,000+

  • Main Products: Doors, Windows, Building Parts

Andersen Corporation is another top name among commercial window manufacturers. The company was founded in Wisconsin but has since moved to Minnesota and now has showrooms across the United States and a few other neighboring countries. 

With Andersen, you get multiple window series, all perfect for different building types. The company prides itself on its product variety and flexibility, as well as a patented window material that they claim to be stronger than most other options available in the market. 

Besides these, Andersen can also help provide custom building documentation, lending their expert services to all aspects of your project.

Pella Windows & Doors

  • Location: Pella, Iowa, USA

  • Company Type: Manufacturer

  • Years in Operation: 100

  • Number of Employees: 10,000+

  • Main Products: Doors, Windows, Building Consultation 

For architectural casement windows, Pells Windows & Doors is a solid option across the board. The company provides reliable and efficient casement windows for large-scale window projects, creating a sprawling collection of window options that can meet all your needs. 

Pella is also a reliable provider of building consultation services. The company can act as your reliable building partner, and with a strong resource base, you can count on them to help you all throughout your building process.  

Marvin Windows & Doors

  • Location: Warroad, Minnesota, USA  

  • Company Type: Manufacturer

  • Years in Operation: 113

  • Number of Employees: 1,000+

  • Main Products: Doors, Windows, Product Design & Replacement Services

A family-owned business, Marvin has grown from its simple days as a cedar and lumber company into one of the top commercial window manufacturers out there. The company focuses primarily on creating sustainable products, infusing green processes into its manufacturing to develop windows that don’t just look great, but are also good for the environment. 

With Marvin, you get reliable casement windows that come in different specifications. As expected, you can also get custom casement windows from the company, so let them know what you need and see how they can work for you.   

Milgard

  • Location: Tacoma, Washington, USA

  • Company Type: Manufacturing

  • Years in Operation: 63

  • Number of Employees: 1,000-1,500

  • Main Products: Windows, Patio Doors, Project Planning Services

Finally, we have the Washington-based Milgard. With 63 years in operation, this company definitely needs no introduction. It has a massive variety of products, many of which fit into large-scale window projects without any issues. 

Milgard makes its windows using different materials, allowing them to fit whatever specifications you might need.  And in a market where durability is critical, you can count on their windows to stand the test of time. 

Case Study: DERCHI’s Track Record of Excellence 

Villa Project, Colorado, USA

To give you a better glimpse of DERCHI’s superior product and service quality, check out the Villa Project case, which the company handled for a client in Colorado, USA. 

Villa Project, Colorado, USA


This specific project was for a residential showroom project, and DERCHI implemented its E5T sliding windows, single-hung windows, P103 swing doors, and 78 folding doors, among others, to transform the building. 

Villa Project, Colorado, USAVilla Project, Colorado, USA


In the end, DERCHI’s client was beyond satisfied, with the building itself and its window designs getting massive positive reviews. 

Villa Project, Colorado, USA


New York Apartment Complex, USA

Over in New York, DERCHI took on the project of an apartment remodel

New York Apartment Complex, USA


The project required DERCCHI’s custom casement windows - particularly, the S9 Casement awning windows. And as you can see, the results speak for themselves in terms of quality and aesthetic appeal. 

New York Apartment Complex, USA


Los Angeles Windows & Doors Project 

For this high-end residential project in the Los Angeles area, DERCHI was contracted to incorporate its aluminum doors and windows. 

Los Angeles Windows & Doors Project


Amongst other things, aluminum casement windows were used to replace the existing ones, offering even better views of the surrounding area and optimal privacy. 

Entire Villa in Hawaii

In the tranquil holiday town of Hawaii, DERCHI Windows & Doors delivered a stunning residential project that included the company’s high-end sliding doors and windows.

 

Entire Villa in Hawaii

The result? A beautiful home remodel that captured the beauty of the surroundings, while fixtures remained weatherproof to handle the harsh weather changes.

Entire Villa in Hawaii


Desert Window & Doors Project in USA

This resort project here highlighted the reliable use of DERCHI’s windows when it comes to proper weatherproofing. 

Desert Window & Doors Project in USA


Here, you see reliable DERCHI windows being installed. These windows will be able to ensure temperature regulation and energy efficiency, even in the harsh desert weather. 

 

Features to Look For in a Custom Casement Window Manufacturer

When selecting a manufacturer for custom casement windows - especially for large-scale window projects - you want to look into some of these features: 

In-House Engineering Team

Manufacturers with in-house engineers will be able to provide accurate structural calculations and handle any design requests, no matter how complex. 

Proven Experience With Commercial Projects

You want commercial window manufacturers with a track record of success. This includes high-volume orders, multiple projects under their belt, and experience with mixed-use developments, among others. 

Strong Warranty Programs

A proper warranty signals that the manufacturer is confident in the quality of their architectural casement windows. This reduces the risk to everyone, especially you. 

Flexibility in Materials and Hardware

Custom building projects need specific materials and performance specifications. The right partner will be able to offer flexibility with frame materials, exterior colors, hardware styles, and even glass finish options. 

Ability to Handle Unique Shapes and Oversized Units

With a large-scale window project, you need custom architectural shapes, oversized casements, custom configurations, and other bespoke needs. You want a manufacturer that can handle all of these while still maintaining the integrity of your project.

FAQs

1. How long does custom fabrication take for casement windows?

Generally, most custom casement window orders take anywhere between a month and two. However, factors like the project size and material choice can affect this as well. 

2. What’s the typical lifespan of a casement window?

With ideal maintenance, you should be able to use your casement windows for between 20 to 40 years. That said, consider the type of material, as this will have an effect on the overall lifespan.

3. Are custom casement windows energy-efficient?

Absolutely! Custom casement windows rank very high when it comes to energy efficiency, thanks to their seal designs that create strong and tight seals when closed.

Conclusion

For large-scale buildings that have a lot of custom requirements, getting the right manufacturer who can deliver casement windows will save you a lot of stress. With DERCCHI Windows & Doors, you have the comfort of knowing that you’re working with a company that has the expertise and network to make your building process move smoothly. 

To learn more about how we can help you, feel free to contact us and request a consultation.

Send Us A Message

Inquire

Related Products

More products

Contact Us

We can custom made to any project unique window and door designs with our professional and experienced sales & technical team.
   WhatsApp / Tel: +86 15878811461
   Email: windowsdoors@dejiyp.com
    Address: Building 19, Shenke Chuangzhi Park, No. 6 Xingye East Road, Shishan Town, Nanhai District, Foshan City China
Contact
DERCHI window and door is one of top 10 windows and doors in China. We are professional high quality aluminum doors and windows manufacturer with professional team for more than 25 years.
Copyright © 2026 DERCHI All Rights Reserved. | Sitemap | Privacy Policy