10" Diameter - 90° Degree Adjustable Elbow - 1 PACK 12" Diameter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 36" or 36" x 8" duct opening (measured at the opening)

Actual Filter Size – 24 3/4"w x 13 3/4" x 1"

+ Product Details Outer dimensions: 19

Design – The stick-on side take-off duct is designed to connect a square duct to a round duct

Unlike traditional doors that have visible frames and hinges

10" Diameter - 90° Degree Adjustable Elbow - 1 PACK 12" Diameter + Product Details Perfect Fit+ Product Details Size 10" round duct sheet metal elbow 26 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 2 Gauge thick & made of thick & durable galvanized sheet metal used for HVAC