Vent in basement

Vent lines being installed in renovation 1" tube by arrow provide air for two lines here. Montaña Paraiso, Escazu, Costa Rica

Vent lines being installed in renovation 1″ tube by arrow provide air for two lines here.

An example of vent lines where we installed them on a renovation of a 50 year old home that had zero ventilation. NOt ethe 1 ” line that is tied into two other lines providing the air inlet to both of them.