Windows & Doors
L3 Construction offers a wide variety of windows and doors to meet the unique needs and preferences of our customers. We understand that every home is different, and that’s why we offer a range of materials, styles, and colors to choose from.
For our windows, we offer options such as vinyl, wood, aluminum, and fiberglass. Each material has its own set of advantages and can be tailored to suit specific needs. When it comes to doors, we have a variety of options including entry doors, patio doors, and sliding doors. Our doors come in a range of materials such as fiberglass, steel, and wood, and can be customized to fit any style or color preference.
No matter what your home needs, we have an option for you! Our expert team is available to help you select the perfect windows and doors for your home, and we pride ourselves on delivering high-quality products and excellent customer service.
Proven energy efficiency. Exceptional design flexibility. Maintenance-free durability.
Thermo-Tech Premium Windows and Doors are made of vinyl. It’s a sustainable, environmentally smart material that lasts. Building products made of wood or other plant-based materials sound “green” but they are less energy efficient than vinyl. Saving energy is good for the planet, and great for your wallet.
Thermo-Fit
Patio & Doors
Classic Series
Browse the Thermo-Fit Catalog Browse the Patio Door Catalog Browse the Classic Series Catalog
Driven to image and create better ways of living.
Since the day we opened our doors in 1912 as a family-owned and -operated cedar and lumber company, we’ve looked for ways to help people live better. We continue to evolve by raising the bar, building quality, beauty and simplicity into people’s everyday lives.
Essential Collection
Browse the Essential Catalog
Essential Picture Window
Essential Awning & Casement Window
Essential Glider Window
Elevate Collection
Browse the Elevate Catalog
Elevate Specialty Shapes Window
Elevate Double Hung Window
Elevate Casement Narrow Window
Signature Collection
Browse the Signature Catalog
Signature Ultimate
Signature Modern
Signature Coastline
Door Solutions
Browse Door Solutions Catalog
Ultimate Bifold Door
Modern Multi-Slide Door
Coastline Swinging French Door
Builders Know the Difference.
Vector Windows and Doors are proudly manufactured in Fergus Falls, Minnesota, where they have firsthand experience with the harsh climate, giving valuable insights into creating windows that can withstand the challenges Mother Nature presents in this region. When you choose Vector Windows, you benefit from a limited lifetime warranty and superior quality.
Your vision. Our passion.
Windsor uses the highest quality materials, resulting in products that are not only beautiful, they are durable, strong and energy efficient. Their goal is to exceed your expectations, including short order lead times, reliable delivery dates and fulfilling custom requests.
