4" Diameter - 90° Degree Adjustable Elbow - 4 PACK d With a temperature range of

With a temperature range of -4°F to 230°F

actual front end outer dimensions are approximately 14 5/8" width X 38 5/8" height -

+ Product Details Size – 18"w X 6"h is the size for the duct opening measurement only

Complies with industry standards of USA: ASTM D-882

this grille enhances air circulation

4" Diameter - 90° Degree Adjustable Elbow - 4 PACK d With a temperature range of+ 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