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Specifying or sourcing architectural aluminum window and door systems requires navigating a dense vocabulary of alloy designations, profile geometries, thermal performance metrics, and third-party certification standards. This glossary consolidates the most important terms — arranged by category — that buyers, architects, and project managers encounter when evaluating aluminum fenestration systems. Whether you are comparing profile depths, interpreting NFRC U-factor labels, or deciding...

When specifying aluminum fenestration for commercial or residential projects, one decision carries more long-term consequences than almost any other: whether to use thermal break or non-thermal break profiles. Both systems are built on aluminum—strong, durable, and low-maintenance—but they behave very differently when heat is trying to move through your building envelope. This technical comparison breaks down the physics, the performance data, and...