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

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

this grille enhances air circulation

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

Easy Access – This panel offers convenient access to HVAC

4" Diameter - 90° Degree Adjustable Elbow - 4 PACK d + 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