2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Compatible with Duct 4" + Product Details Size –

+ Product Details Size – 10" x 14" or 14" x 10" is the size for the duct opening measurement only

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

The L-shaped brackets

10" Diameter Is The Size For The Duct Opening Measurement Only

Performance – High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

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