Round Stack Boot 12" X 3.25" X 7" round Compatible with 7" Duct w18h18 Rigid Design - Noise Free

Rigid Design - Noise Free Components - No Vibrating Louvers Etc

Tamper-Proof Design – Provides robust protection to prevent unauthorized access and ensure consistent thermostat settings

+Product Details Size – 3/8" x 50'

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Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 12" duct openings

Round Stack Boot 12" X 3.25" X 7" round Compatible with 7" Duct w18h18 Rigid Design - Noise Free+ Product Details Size The size of a galvanized sheet metal stack boot is 12" 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