
Key Takeaways
- Custom mulled glass windows are sought after because they improve the aesthetic and value of high-end homes.
- Modern mulled glass windows also contribute to energy efficiency and soundproofing in homes.
- Panda Windows & Doors can provide custom mulled windows for any residential and commercial project.
What Are Custom Luxury Glass Mulled Windows
Custom luxury glass mulled windows are made by joining two or more individual window units at their frames, creating a larger, cohesive glass surface.
Since our founding in 1991, Panda Windows & Doors has specialized in state-of-the-art custom glass wall systems for both residential and commercial spaces. Operating from our manufacturing facility in Las Vegas, Nevada, we have been at the forefront of innovation for over 30 years. Our product offerings, which include over 80 high-end options, such as pivot doors, French doors, folding doors, lift & slides, multi-slides, horizontal sliding walls, and operable windows, are available in a range of materials, including aluminum, steel, stainless steel, bronze, solid wood, and aluminum-wood clad.
Our company is widely recognized for its award-winning designs, engineering solutions, and rapid delivery times. We ensure that our customers throughout the U.S. and Caribbean receive their products within 6-10 weeks. Our company is trusted by leading architectural firms and glaziers nationwide, and we stand as the premier manufacturer of custom luxury windows and doors in the United States.
Learn About Custom Solutions from Panda Windows & Doors Today
Benefits Of Custom Luxury Glass Mulled Windows
- Aesthetic Appeal: Custom mulled windows allow larger glass areas to maximize natural light and provide unobstructed views of the outdoors.
- Versatile Design Options: These windows can be customized to fit various architectural styles and personal preferences. You can choose from different shapes, sizes, and materials, including wood, aluminum, or vinyl.
- Increased Energy Efficiency: Custom mulled windows can have advanced glazing options, such as double or triple-pane glass with low-E coatings, which improve insulation and help regulate indoor temperatures.
- Reduced noise: The multiple panes and quality construction provide excellent sound insulation to create a more peaceful indoor atmosphere.
- Increased Home Value: The benefits of custom luxury windows can be appealing to potential buyers, which makes your home stand out in the real estate market.
Cost Of Custom Luxury Glass Mulled Windows

There are limits to the size of the window unit that can be mulled.
Base Prices
A fiberglass mulled window can cost upwards of $2,000.
- 2-Wide Double-Hung: Starting from $2,100
- 3-Wide Double-Hung: Starting from $3,200
Average Installation Costs
Basic installation charges can range from $75 to $300 per square foot, depending on the complexity of the installation and the window style chosen.
Material Impact
The frame material significantly influences pricing:
- Aluminum frames range from $200 to $700.
- Fiberglass frames can cost between $600 and $2,500.
- Wood frames range from $400 to $1,800.
Glass Type
The choice of glass also affects the overall cost:
- Double-pane glass generally adds about $300 to $1,000 per window.
- Low-E or laminated glass options may increase costs further.
Read More: 10 Types of Glass for Custom Doors & Windows: The Ultimate Guide
Custom Features
Custom designs and additional features (like energy-efficient coatings or decorative glass) can add anywhere from $50 to several hundred dollars per window.
* These are just estimates, and the actual price can vary. We recommend you contact us to get the most accurate pricing.
Choose Panda Windows & Doors For Your Custom Mulled Windows

The Panda brand has been synonymous with high-quality custom windows and doors for over 30 years.
When you choose Panda Windows & Doors for your custom windows, you’re selecting a company that prioritizes quality and customization. Here’s why we stand out:
1. Complete Focus on Customization: We specialize in crafting luxury windows customized to fit your home.
2. Award-Winning Designs: Our products feature award-winning designs that can add to the beauty of your space.
3. Engineering Expertise: We tackle complex projects with innovative engineering solutions so that even the most challenging designs are executed flawlessly.
4. High-Quality Materials: Our windows and doors are made from the finest materials, including aluminum, steel, wood, and more, for durability and elegance.
5. Energy Efficiency: Many of our products are LEED® compliant, helping you save on energy costs while being environmentally friendly.
6. Large Panel Options: We can create massive panels up to 24 feet tall and 16 feet wide, which allow for breathtaking views and ample natural light.
So don’t wait. Reach out to us to learn more about our products and get a free quote.
Frequently Asked Questions (FAQs)
What is the lifespan of luxury glass mulled windows?
Luxury glass mulled windows have a lifespan of around 20 years. Regular maintenance can further extend their lifespan.
What maintenance is required for these windows?
Regular cleaning with mild soap and water will keep the glass clear and the frames looking new. Plus, inspect the seals and hardware periodically to check if they're functioning properly.
Can these windows improve home energy efficiency?
Yes! Features such as double or triple glazing, low-emissivity coatings, and thermal breaks help to minimize heat transfer.
Read More: Double-Glazed Glass vs Regular Glass: Which Is Better?
Can all window types be mulled together?
Not all windows can be mulled. Professionals must evaluate the size and weight of each window unit to make sure they can be safely combined without compromising structural integrity.