Quantum Windows & Doors manufactures custom wood and clad window and door systems for high-end residential and architectural projects. Golden State Lumber and Showroom supplies Quantum Windows & Doors windows and doors for replacement projects, custom homes, multifamily buildings, and light commercial construction throughout Northern California.








At Quantum Windows & Doors, we manufacture the highest quality wood, clad, and steel, which demonstrate attention to craftsmanship and design in a working environment which is healthy, safe, and amiable, making every effort to use materials and processes which minimize adverse effects on the environment. Over the years, Quantum product lines have expanded and market reach has become international. From its humble beginnings in a general contractor’s garage, Quantum has grown into an industry leader in the manufacturing of wood, clad, and steel windows and doors. Our current production facility in Arlington, WA, is designed to maximize craftsmanship and attention to detail throughout the production process. Quantum is still locally owned today.
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Golden State Lumber has been serving Northern California builders, contractors, architects, and homeowners for decades. We combine quality building materials with knowledgeable service to help customers find the right products and solutions for projects of every size.
Many customers return because they value consistent service, knowledgeable support, and access to quality building materials and trusted brands. Our goal is to build long-term relationships by helping customers complete successful projects, no matter the size.
If you don’t see the product you need, contact our team. Through our extensive supplier network, we can often source specialty, custom, and hard-to-find products and help you find the best solution for your project.