Simonton manufactures vinyl windows and patio doors for replacement and new construction with practical performance and value options. Builders, contractors, architects, and homeowners can source Simonton windows and doors through Golden State Lumber and Showroom for replacement projects, custom homes, multifamily buildings, and light commercial construction across Northern California.








Simonton was founded in Pennsboro, West Virginia in 1946, when Fred and Sybil Simonton recognized the need for high-quality exterior aluminum products and founded Pen Vent Awning. Their son would later help take Simonton to the next level. In 1981, he convinced the rest of the family that in order to differentiate the company from its competitors, they would need to begin producing energy-efficient vinyl windows. As a result, Simonton Windows was born.
Today, the Simonton portfolio of products includes 12 different window and patio door lines with varying structural and stylistic features, all of which can be ordered to meet ENERGY STAR® guidelines. In addition, Simonton is committed to always exceeding customer expectations with the highest‐quality products available and unbeatable service.
How to Replace the Sash on an Awning Window
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Your Annual Window Checkup Checklist
How to Replace the Balance on a Double Hung Window
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How to Replace a Vent Latch
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How to Replace an Insulated Glass Unit with a Tape Glaze
How to Install a Simonton 5500 Double Hung Window
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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.