4" Diameter - 90° Degree Adjustable Elbow - 4 PACK Grille + Product Details Size -

+ Product Details Size - 8"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 22"w X 12"h is the size for the duct opening measurement only

Operating from -40°F to +248°F

+ Product Details Size - 18"w X 8"h is the size for the duct opening measurement only

+ Product Details Size – 32"w X 28"h is the size for the duct opening measurement only

4" Diameter - 90° Degree Adjustable Elbow - 4 PACK Grille + Product Details Size -+ Product Details Size 4" 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