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

+ Product Details Size – 16" X 16" is the size for the drywall opening measurement only

+ Product Details Size – 20" x 26 or 26" x 20" is the size for the duct opening measurement only

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

5" Flexible Joint

3" Diameter - 90° Degree Adjustable Elbow - 4 PACK ceiling + Product Details Size –+ Product Details Size 3" 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