12" Diameter - 90° Degree Adjustable Elbow - 1 PACK return grille It has an outer surface

It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire

+ Product Details Size - 36"w X 20"h X 2"d (for duct opening measurement only)

+ Why Hvac Premium HVAC Premium has been providing superior quality service for many years

+ Product Details Size – Duct end cap is 30" X 10" | 26-gauge galvanized steel end cap

larger than the same nominal size "plumbing" pipe

12" Diameter - 90° Degree Adjustable Elbow - 1 PACK return grille It has an outer surface+ Product Details Size 12" 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