Lochinvar & A.O. Smith 100111100 3" Concentric Vent Kit

The Lochinvar & A.O. Smith 100111100 3” Concentric Vent Kit is an HVAC part that efficiently directs the combustion by-products out of your home. This one is circular in design and can admit fresh air and expel stale air through the same pipe thus easing installation. This vent kit is used mostly for boilers and water heaters.is a specialist HVAC component that effectively vents combustion gasses away from your home. It has a circular design that allows for both intake and exhaust of air through the same pipe, decreasing installation complexity. This vent kit is commonly used for boilers and water heaters.