Round Stack Boot 10" X 3.25" X 5"- is Compatible with Duct 5" Compatible With Duct 8in actual front end outer dimensions

actual front end outer dimensions are approximately 20 5/8" width X 18 5/8" height

+ Product Details Size - 5" Diameter is the size for the duct opening measurement only

The total outer size of this grille is the listed size plus 2 and 5/8"

+ Product Details Size – 18" x 32" or 32" x 18" is the size for the duct opening measurement only

Round Stack Boot 10" X 3.25" X 5"- is Compatible with Duct 5" Compatible With Duct 8in actual front end outer dimensions+ Product Details Size The size of a galvanized sheet metal stack boot is 10" X 3. 25" X 5". It is compatible with duct 5". 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