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• Feb 4, 2026 smacna duct construction standards metal and flexible fittings Installation Best Practices Standards recommend: Supporting flexible ducts at adequate intervals (generally every 4-6 feet) Minimizing bends and reducing length where possible Avoiding contact with hot or sharp surfaces Securing ducts to prevent movement and vibration Testing and Inspect BY Manuel Hoeger-Lang Jr.
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• Oct 17, 2025 residential hvac duct design guide ure, and material selection, and following a systematic design process, homeowners and contractors can create duct systems that perform reliably and efficiently for years to come. Regular maintenance, proper BY Jerrod Bailey
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