Round Stack Boot 10" X 3.25" X 7"- is Compatible with Duct 7" return grille + Product Details Size –

+ Product Details Size – 28"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 6"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 36"h X 2"d (for duct opening measurement only)

Actual Filter Size – 33 3/4"w x 15 3/4" x 1"

Round Stack Boot 10" X 3.25" X 7"- is Compatible with Duct 7" return grille + 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