Round Stack Boot 10" X 3.25" X 6"- is Compatible with Duct 6" Sheet Metal / Round Duct + Product Details Size -

+ Product Details Size - 16"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 7 3/4" x 1"

Universal Fit – Dimensions of 6-3/8" wide x 3-1/2" high x 3" deep make it compatible with most standard thermostat models

4" X 12" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

+ Product Details Size - 12"w X 14"h X 2"d (for duct opening measurement only)

Round Stack Boot 10" X 3.25" X 6"- is Compatible with Duct 6" Sheet Metal / Round Duct + Product Details Size -+ Product Details Size The size of a galvanized sheet metal stack boot is 10" 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