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Why Every Project Manager Needs to Understand the NFRC Label When you're specifying windows and doors for a commercial or multi-family project, the fenestration product data sheet can run several pages. But one piece of information cuts through the noise faster than any marketing brochure: the NFRC label. Administered by the National Fenestration Rating Council (NFRC), this standardized energy performance label gives...

Why U-Factor Is the Most Critical Metric for Aluminum Window Specification When architects, builders, and contractors specify windows for a new construction or retrofit project, no single performance number carries more regulatory and energy consequence than U-factor. Unlike visible light transmittance or air leakage ratings, U-factor directly determines whether your fenestration assembly passes prescriptive energy code—or triggers a costly performance-path compliance review....

Why Climate Zone Is the First Variable in Glass Selection Specifying the wrong glass for a project's climate zone is one of the most common—and costly—mistakes in fenestration design. A window that performs brilliantly in Minneapolis will underperform in Miami, and vice versa. For architects, contractors, and builders working with aluminum windows and doors, understanding how to match glass type to IECC...