Sheet Metal Duct Elbow; Item Duct Elbow; Type Spiral; Size A 7 Inch; Size B 7 Inch; Angle 90 Degree; Material Thickness 26 Gauge; Material ASTM A653 CSB Hot Dip Galvanized Steel; Inclusions/Features 1/8 Inch Zinc Coated Rivet; Applicable Standard SMACNA