Round Stack Boot 12" X 3.25" X 6"- is Compatible with Duct 6" 1-Way + Product Details Size -

+ Product Details Size - 30"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 36 5/8" height

+ Product Details Size – Duct end cap is 12" X 6" | 26-gauge galvanized steel end cap

+ Product Details Size - 14"w X 20"h X 2"d (for duct opening measurement only)

only measure the "hole" in the wall

Round Stack Boot 12" X 3.25" X 6"- is Compatible with Duct 6" 1-Way + Product Details Size -+ Product Details Size The size of a galvanized sheet metal stack boot is 12" X 3. 25" X 6". It is compatible with duct 6". 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