2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Compatible with Duct 4" Design – Removable frame for

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

The L-shaped brackets

in the wall/duct

Actual Filter Size – 29 3/4"w x 17 3/4" x 1"

Multi Angled Fan Pattern Fins For Multi Directional AIr Distribution Throughout The Entire Room

2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Compatible with Duct 4" Design – Removable frame for+ 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