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About Us

Family owned and operated, Windorco Supply Inc. was established in 1961. For over 57 years, three generations have been providing exceptional products and services to the Puget Sound area, as well as shipping to Alaska, Hawaii and as far away as Russia. Whether you’re a neighbor of ours in Ballard, or managing a rental property out of state, we are confident we can provide the products you want and need. Specializing in true Douglas-Fir wood windows, Windorco has created our own niche in the greater Seattle area. Replicating old wood windows, all over Queen Anne, Capitol Hill, Magnolia and more, we’ve provided our customers with the value they desire at a fraction of our competition’s price and lead time. Manufacturing aluminum windows as well, we can accommodate customers looking to match an existing set up, or start from scratch, achieving a contemporary modern look. Top quality brand vinyl windows are also available, with the ease of maintance and life-time warranties. Our business is predominantly run on repeat customers and referrals. We don’t cold call people, or hire outside salesmen. We let you decide what you want, and when you want it. We use only the best quality materials through out the entire process, from fabrication to installation, which has allowed us to stay in business as long as we have. We look forward to doing business with you.

Services Provided

Sliding Door Installation, Trim Work, Window Installation, Window Replacement, Window Manufacturing

Areas Served

Alderwood Manor, Ballard, Beacon Hill, Bellevue, Bothell, Brier, Clyde Hill, Edmonds, Hunts Point, Inglewood-Finn Hill, Kenmore, Kingsgate, Kirkland, Lake Forest Park, Lynnwood, Medina, Mercer Island, Mill Creek, Mountlake Terrace, North Beacon Hill, Seattle, Shoreline, White Center, Woodinville, Woodway, Yarrow Point


100% Rating on Checkbook A Rating on Angie's List Seattle's Oldest Window Manufacturer 2018 Super Service Angie's List Award


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Business Details

Business Name


Phone Number

(206) 784-9440


Seattle, WA 98117

License Number



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