Framing American Precision.
Quality Weatherstrip Products Since 1959
Born in California in 1959, Combo Aluminum continues to combine precision engineering with human trust.
Since 1959, Combo Aluminum has been a leading manufacturer of exterior door components in the building and construction industry. Our experienced team of experts aims to provide our customers with high-quality products and a superior level of service.
Door Products
Engineered for Precision. Built to Endure. Each Combo Aluminum door system is crafted for accuracy, strength, and long-term performance. From frames to sills, our components ensure a perfect fit and dependable operation — project after project, year after year.
Precision Frame
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Durable Sill
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Aluminum Component
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Reliable Frame
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New Releases
Advancing the Standard. Explore the newest innovations from Combo Aluminum — frames, sills, and aluminum components designed to enhance durability, installation precision, and aesthetic consistency across every project. Built on six decades of craftsmanship, engineered for what’s next.
Innovative Frame
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Advanced Sill
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New Component
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Future Frame
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Full Hardware catalog
Explore the Complete Hardware Line. Access the full Combo Aluminum catalog to view our complete range of door, frame, and component solutions. Each product is detailed with exact specifications, finishes, and performance data — all engineered for precision and reliability in every build.
Our Story
A Legacy of Precision Since 1959. Combo Aluminum was founded in El Cajon, California, when Wally Miller patented the original Combo Sill — a small innovation that transformed an entire segment of the building industry. More than six decades later, that same spirit of craftsmanship and integrity continues to guide everything we do. We build aluminum systems that protect, connect, and endure — combining engineering precision with human trust in every frame we produce.
Contact
Let’s Build Together. Whether you’re requesting a quote, exploring distribution, or need technical support, our team is ready to help. Combo Aluminum is committed to fast response times, clear communication, and solutions built on trust and precision.