At The ONE CA LLC, we don’t just create windows and doors—we craft experiences that enrich your home. With a warm, attentive, and innovative approach, we bring your vision to life by designing products that reflect your unique style and needs.
Windows are more than structural elements; they frame the moments that matter—filling your home with warmth, love, and connection. We listen closely to our customers, ensuring every design is a perfect blend of beauty, functionality, and craftsmanship.
With meticulous attention to detail and a commitment to quality, we provide customized window and door solutions that elevate your space, enhance natural light, and create lasting impressions.
Let us help you frame the life you love.
Fulfill the Minimalist’s Dream with Ultra-Narrow Frame Windows
Experience the pinnacle of modern design with The ONE Ultra-Narrow Frame Series—the ultimate choice for those seeking sleek, expansive, and contemporary architectural glazing. With frames that are 35% slimmer than standard designs, this innovative system enhances natural light, maximizes views, and delivers a seamless aesthetic.
✔ Expansive Glass, Minimal Frame – Designed for larger window sizes, allowing for uninterrupted panoramic views and a bright, open feel.
✔ Sophisticated & Seamless – The flush frame and sash create a clean, refined appearance that complements modern architecture.
✔ Precision Engineering – Powered by Belgium-made SOBINCO hardware, our windows feature advanced tilt-and-turn functionality for superior performance.
✔ Innovative & Streamlined – Concealed hinges and a handle-free design maintain a sleek, contemporary look while ensuring effortless operation.
At The ONE, we push the boundaries of innovation to redefine modern living. Elevate your space with ultra-narrow frame windows—where minimalism meets exceptional craftsmanship.
The ONE [W+] COLLECTION
Energy-Efficient Alu-Clad Wood Windows & Doors
U-values as low as 0.1 Btu/hr·ft²·°F
Our windows are meticulously designed and engineered to ensure minimal maintenance and low lifetime costs.
This makes them the ideal choice for social housing projects and new or refurbished council housing, where quality and long-term value are essential. They are even more advantageous for privately financed lease-back projects, where durability and efficiency play a crucial role.
Low U-Values – Long Life Cycle of Over 60 Years
The ONE’s Windows Energy Efficient [W+] Collection offers windows with a U-value of 0.18 Btu/hr·ft²·°F when equipped with triple glazing, helping to meet stringent annual energy consumption targets.
With an exceptionally low U-value, these high-performance windows provide superior airtightness and passive solar gain. This results in significant cost savings across the building's mechanical, engineering, and insulation systems, leading to reduced overall energy consumption. The outcome is not only a more energy-efficient building but also the assurance that targets for energy performance are comfortably exceeded. Additionally, these windows are designed for a long life cycle, exceeding 60 years of service.
Wood Collection
Whichever you choose, our wood windows will be naturally appealing to your home’s architectural design.
Aluminum Treatments
Available in custom colors and which is polyester powder coated to a range of 250 RAL colors, some colors including metallic and peal may incur extra costs.
Custom Sizes
Available in custom sizes and with a nailing flange to fit into your existing opening, making installation quick and easy