TinnerFlow™4th YearDuct Systems
Systems above 3" WG require Leakage Class 3 or better per SMACNA. This means sealed longitudinal seams, gasketed TDC flanges, and a pressure test before c…
Systems above 3" WG require Leakage Class 3 or better per SMACNA. This means sealed longitudinal seams, gasketed TDC flanges, and a pressure test before commissioning. Verify your construction meets the leakage class before scheduling the test.
Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.