4 Best Large Windows That Open

Every homeowner likes large windows that open, which not only bring in abundant natural light but also provide good ventilation and airflow. However, due to the hardware’s loading ability, most window styles have a size limit. For example, the width of a single casement window is only about 36″, and the sliding window should be no more than 72″. Is there a large enough window that can also be opened? Absolutely yes! Today, we will introduce the four best large windows that open to you.

Motorized Vertical Sliding Window

The motorized vertical sliding window is a type of window that operates using a motorized mechanism, allowing it to move up and down smoothly and effortlessly. It is designed to function similarly to a traditional vertical sliding window, with the added convenience of an automated system. The motorized mechanism is typically controlled using a switch or remote control, enabling users to open or close the window easily. This type of window is ideal for those who want to enjoy the benefits of a traditional sliding window but prefer the convenience of an automated system.


  1. Enjoy a panoramic view with a 180-degree wide-angle view, while the 50% ventilation area provides natural refreshment.
  2. It is fearless against super typhoons and can withstand storms of magnitude 12 or more. Its wind resistance is 3000pa, and its watertightness is 450pa.
  3. It comes with an electric mosquito screen, which can prevent insect invasion while ensuring fresh indoor air circulation.

Size Limits

Recommend width: 3.5 meters <Width<4.5 meters, recommend height: 1.8 meters <Height<2.6 meters. Maximum weight<450kg.

The automatic lift up window is the best window if you need large windows that open.

Fold Up Windows

A fold-up window, also known as a fold-out or fold-in window, is a vertical folding window popular in coffee bars, restaurants, and kitchen bars.


  • Space-saving: Fold-up windows offer a seamless transition between indoor and outdoor spaces without taking up space. They’re perfect for small areas and provide a constant flow of fresh air and natural light.
  • Aesthetics: Fold-up windows can give residential and commercial properties a modern and stylish look. They can be customized with different frame materials, finishes, and glass options to complement the overall design scheme.
  • Natural ventilation: When fully opened, folding windows allow maximum airflow, promoting natural ventilation and helping regulate indoor temperatures. This can reduce the reliance on mechanical cooling systems, leading to energy savings and improved comfort.
  • Controlled movement: You can adjust the window to be opened partially or fully and keep it securely in place at different positions. This feature provides versatility, allowing you to modify the window for better ventilation, sunlight, or serving purposes.
  • Electrical option: You can opt for an electric opening, which can accommodate larger window sizes compared to manual operations.

Size Limits

Window Frame40 series55 series60 series60 heavy
duty series
Wall Thickness1.2-1.4mm thk1.4-2.0mm thk2.0-3.0mm thk2.0-3.0mm thk
Width to wall43mm55mm60mm60mm
Size limitsWidth<3mWidth<3Width<3.3Width<3.5m
Fold up windows provide more options to make the large windows that open

Gas Strut Windows

A gas strut window, also known as a gas strut awning window or a gas strut servery window, is commonly used in commercial and residential settings, especially in kitchens, bars, and restaurants.

These windows are designed to open upwards, pivoting from the bottom, and are supported by gas struts (gas springs) rather than traditional hinges. Gas struts are filled with compressed gas, typically nitrogen, which creates pressure to assist in smoothly opening and closing the window.


  • Ease of Operation: Gas struts assist in smoothly opening and closing the window, reducing the effort required to operate it. This makes them ideal for situations where frequent opening and closing are necessary, such as in commercial kitchens or bars.
  • Versatility: Gas strut windows can be installed in various locations such as kitchens, bars, cafes, restaurants, and outdoor entertainment areas. They allow for seamless interaction between indoor and outdoor spaces, making them famous for serving counters or creating indoor-outdoor dining experiences.
  • Aesthetic Appeal: Gas strut windows offer a modern and stylish appearance, adding aesthetic value to residential and commercial properties. They can be customized in various sizes, shapes, and materials to complement the building’s architectural design and decor.
  • Electrical operation:

Size Limits

For single glass, the height is <1800mm, and control the window area is less than 3.5sqm. For double-glazed glass, the height is <1500mm, and the window area should not be more than 3.0sqm.

Bifold Windows

Bifold windows consist of multiple sashes connected by hinges that allow them to fold open and close. They are flexible, making it easy to open and close them. These windows offer excellent ventilation, abundant natural light, and an expansive field of vision, making the room brighter and more comfortable. However, their airtight performance is slightly inferior to that of traditional windows.


  • Space Optimization: Bifold windows are designed to fold open along a track, neatly stacking the panels to the side when fully opened. This ingenious mechanism allows maximum space utilization, making them an ideal option for areas where traditional swinging or sliding windows encroach on usable space. Bifold windows provide an efficient solution for opening up the area while maintaining functionality in compact living spaces or areas with limited clearance, such as balconies or patios.
  • Versatile Ventilation Options: Bifold windows are a great option for those who want precise control over their indoor ventilation. Unlike traditional windows that can only be opened fully or kept closed, bifold windows can be partially opened by folding back one or more panels. This versatile option provides users with the ability to adjust the degree of airflow according to their preferences, making it easy to regulate indoor comfort, especially in climates where temperature and humidity levels fluctuate throughout the day.

Size Limits

450<one panel<600, 1000<height<2300. Panels can be customized to your size.

Conclusions for Large Windows That Open

If you seek to maximize the amount of fresh air and natural light that enters your living space, you may want to consider installing large windows that open wide. For kitchen bars, gas struts or fold-up windows are excellent options, allowing you to access the outdoors while cooking or entertaining guests easily. On the other hand, motorized vertical sliding or bifold windows provide a seamless transition between indoor and outdoor living spaces for balcony and patio areas. With their sleek and modern design, these windows not only improve the aesthetics of your home but also enhance its functionality and comfort.





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