18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length w14h14 + Product Details Perfect Fit 6in diameter LO3236 Easily adjust dimensions with

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 18" duct openings

compatible with duct 4" | 5 in a pack - 4 inch diameter pipe – 10 foot length when connected – 30 gauge thick & made of thick & durable galvanized sheet metal

actual front end outer dimensions are 23

18" Insulated Aluminum Flexible HVAC Duct R 6.0 – 25' Length w14h14 + Product Details Perfect Fit 6in diameter LO3236 Easily adjust dimensions with + Product Details Perfect Fit & Easy Sizing Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening) Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 18" duct openings