4" Diameter - 90° Degree Adjustable Elbow - 4 PACK d + Product Details Size -

+ Product Details Size - 36"w X 24"h is the size for the duct opening measurement only

Actual Filter Size – 33 3/4"w x 15 3/4" x 1"

Actual Filter Size – 15 3/4"w x 24 3/4" x 1"

85" width X 9

4" Diameter - 90° Degree Adjustable Elbow - 4 PACK d + Product Details Size -+ Product Details Size 4" 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