All you have to do to achieve that seal is to place this collar between the vent pipe and the roof flashing. It keeps moisture from seeping in from rain and weather, it's perfectly compatible with other PelletVent Pro venting components with a 4 inch inner diameter, and it carries a limited lifetime warranty. The weather protection your vent system needs is as easy as applying this easy-to-install PelletVent Pro Storm Collar.
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