A vent assembly comprising: a vent housing defining: a first airflow pathway configured for fluid communication with an interior of an enclosure ; a second airflow pathway configured for fluid communication with the environment external to the vent housing ; and a third airflow pathway extending between the first airflow pathway and the second airflow pathway ; a membrane coupled to the vent housing such that the second airflow pathway and the third airflow pathway are in communication through the membrane ; coalescing filter media disposed within the vent housing such that the third airflow pathway and the first airflow pathway are in communication through the coalescing filter media ; and the vent assembly defining a spacing region between the coalescing filter media and the membrane , wherein the spacing region is: - defined by a media spacer disposed within the vent housing between the coalescing filter media and the membrane , and by a physical gap between the media spacer and the membrane , or - the spacing region is merely a physical gap between the coalescing filter media and the membrane , characterized in that the coalescing filter media comprises a stack of a plurality of layers of synthetic filter media, wherein each of the stacked layers of synthetic filter media has a central axis, a plurality of the central axes being not collinear, such that some of the layers are non-aligned with some other of the layers of the coalescing filter media for preventing air from bypassing the coalescing filter media . a vent housing defining: a first airflow pathway configured for fluid communication with an interior of an enclosure ; a second airflow pathway configured for fluid communication with the environment external to the vent housing ; and a third airflow pathway extending between the first airflow pathway and the second airflow pathway ; a first airflow pathway configured for fluid communication with an interior of an enclosure ; a second airflow pathway configured for fluid communication with the environment external to the vent housing ; and a third airflow pathway extending between the first airflow pathway and the second airflow pathway ; a membrane coupled to the vent housing such that the second airflow pathway and the third airflow pathway are in communication through the membrane ; coalescing filter media disposed within the vent housing such that the third airflow pathway and the first airflow pathway are in communication through the coalescing filter media ; and the vent assembly defining a spacing region between the coalescing filter media and the membrane , wherein the spacing region is: - defined by a media spacer disposed within the vent housing between the coalescing filter media and the membrane , and by a physical gap between the media spacer and the membrane , or - the spacing region is merely a physical gap between the coalescing filter media and the membrane , - defined by a media spacer disposed within the vent housing between the coalescing filter media and the membrane , and by a physical gap between the media spacer and the membrane , or - the spacing region is merely a physical gap between the coalescing filter media and the membrane , characterized in that the coalescing filter media comprises a stack of a plurality of layers of synthetic filter media, wherein each of the stacked layers of synthetic filter media has a central axis, a plurality of the central axes being not collinear, such that some of the layers are non-aligned with some other of the layers of the coalescing filter media for preventing air from bypassing the coalescing filter media . <EOS>