4" Diameter - 90° Degree Adjustable Elbow - 4 PACK Grille optimal efficiency

optimal efficiency

Actual Filter Size – 21 3/4"w x 11 3/4" x 1"

Security: The access panel is equipped with a slotted lock

Width vs Height:

4" Diameter - 90° Degree Adjustable Elbow - 4 PACK Grille optimal efficiency+ 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