16" Diameter - 90° Degree Adjustable Elbow - 1 PACK Height_12in + Product Details Size -

+ Product Details Size - 20"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are 21

actual front end outer dimensions are approximately 27 5/8" width X 24 5/8" height

Seamless Installation: Designed to fit seamlessly into a 24 by 24 inch opening

with actual outer dimensions of 30

16" Diameter - 90° Degree Adjustable Elbow - 1 PACK Height_12in + Product Details Size -+ Product Details Size 16" 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