Vacu-Stack 6" with 1/2" x 1/2" Single-Flue Round Screen

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The Vacu-Stack Chimney Cap with Screen is the best solution for wind induced downdrafts on both masonry and prefabricated chimneys. It is designed to stop wind from blowing into th e chimney regardless of the wind direction. Accelerated air flow around the Vacu-Stack causes flue gasses to flow up and out of the chimney.This model is designed for a round Class A Double Wall Chimney and can be used on a masonry chimney with the proper adapter sold separately. 100% Stainless Steel Construction Wind tunnel tested Lifetime Limited Warranty Meets UL Standards Easy to Install, self-adjusting spring fit See Vacu-Stack Ordering Instructions for proper fit. View the Vacu-Stack Guide. Vacu-stack Sizing Show more