Round Stack Boot 12" X 3.25" X 7" round Compatible with 7" Duct 7" Diameter or diffusers

or diffusers

compatible with duct 4" | 10 in a pack - 4 inch diameter pipe – 20 foot length when connected – 30 gauge thick & made of thick & durable galvanized sheet metal

Unrestricted Airflow For Your HVAC System - Full Control Directional Airflow Direction - Noise Free Components - No Vibrating Louvers Etc

+ Product Details Size – 12" X 2" is the size for the duct opening (floor/vent hole) measurement only

Actual Front End Outer Dimensions Are 11

Round Stack Boot 12" X 3.25" X 7" round Compatible with 7" Duct 7" Diameter or diffusers+ Product Details Size The size of a galvanized sheet metal stack boot is 12" X 3. 25" X 7". It is compatible with duct 7". Design The stack boot at the bottom of the stack allows a transition from an ordinary large round or rectangular duct to a thin wall mounted duct. Applications The straight boot is used for a straight line transition going from round pipe or insulated flex duct to wall stack. Premium Quality Our straight round stack boot is made