5" Diameter - 90° Degree Adjustable Elbow - 4 PACK Drop Ceilings / Aluminum 6"w X 6"h 3-Way Fixed

6"w X 6"h 3-Way Fixed Curved Blade Air Supply Diffuser - Vent Duct Cover - Grille Register - Sidewall or Cieling - High Airflow - White

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 6" OR 6" x 36" duct opening (measured at the opening)

this solid-base guard ensures long-lasting performance with minimal hassle

+ Product Details Size - 20"w X 18"h X 2"d (for duct opening measurement only)

With a 4" diameter for the duct opening measurement

5" Diameter - 90° Degree Adjustable Elbow - 4 PACK Drop Ceilings / Aluminum 6"w X 6"h 3-Way Fixed+ Product Details Size 5" 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