Round Stack Boot 10" X 3.25" X 7"- is Compatible with Duct 7" 4" Round Duct Pipe + Product Details Size -

+ Product Details Size - 10"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 35 3/4" x 1"

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Round Stack Boot 10" X 3.25" X 7"- is Compatible with Duct 7" 4" Round Duct Pipe + Product Details Size -+ Product Details Size The size of a galvanized sheet metal stack boot is 10" 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