This outside air vent assembly is used as an outside hood and receiver for any 3″ aluminum flex liner when using an outside air connection that is not part of a colinear wall pass-through thimble.
A duplex or colinear thimble allows for exhaust and outside air to be used in one connection. This is often used to connect and an outside air kit to a preexisting installation where only one 3″ hole needs to be cut and the existing exhaust thimble is left untouched.
This intake hood is made from 316T Stainless steel and can be used for any installation for any brand of stove where a 3″ intake is required.