3" Diameter - 90° Degree Adjustable Elbow - 4 PACK tool bag + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 20" OR 20" x 36" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 26" duct opening (measured at the opening)

Design – Removable frame for easy filter change & cleaning - uses a 1" thick filter

actual front end outer dimensions are approximately 38 5/8" width X 10 5/8" height

+ Product Details Size – 36"w X 10"h is the size for the duct opening measurement only

3" Diameter - 90° Degree Adjustable Elbow - 4 PACK tool bag + Product Details Perfect Fit+ 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