Low pressure and friction loss. Meets SMACNA gauge requirements. Airtight 4-ply lock seam construction. Meets leakage Class 3 for 10” W.G. Duct construction class in a sample test section. Sealant is required only where elbows attach to the duct, saving labor time. Greater structural integrity. 26 ga Galvanized Steel
(Note: 45 degree Elbow pictured)
