2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Compatible with Duct 4" Item Size: 155 x 69

Item Size: 155 x 69 x 60 mm

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

in the wall/duct

The L-shaped brackets

2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Compatible with Duct 4" Item Size: 155 x 69+ 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