18" Diameter - 90° Degree Adjustable Elbow - 1 PACK Curved Blade Steel This 12" X 12" end

This 12" X 12" end cap is constructed with 26-gauge galvanized steel

+ Product Details Size - 6"w X 8"h is the size for the duct opening measurement only

and ducting while maintaining easy access to critical points in your wall or ceiling

+ Product Details Size - 16"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 4"h is the size for the duct opening measurement only

18" Diameter - 90° Degree Adjustable Elbow - 1 PACK Curved Blade Steel This 12" X 12" end+ Product Details Size 18" round duct sheet metal elbow 30 gauge galvanized crimped end connection adjustable from 5 90 Premium Quality Made of galvanized metal to prevent corrosion, oxidation & rust from water & moisture that lasts longer requiring less maintenance Save money with this energy efficient material, maximizes airrflow and reduces fire hazards. Applications 30 Gauge thick & made of thick & durable galvanized sheet metal used for HVAC