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

+ Product Details Size – 24"w X 16"h is the size for the duct opening measurement only

making it an ideal present for holidays

Complies with industry standards of USA: ASTM D-882

A: Black Grilles Always Look Sharp And Never Show Dirt & Dust Marks

Actual Filter Size – 21 3/4"w x 19 3/4" x 1"

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