Fresh 39++ B Vent Vs Direct Vent
Fresh 39++ B Vent Vs Direct Vent. Indirectly vented safety goggles are the ideal choice for dealing with chemicals where chance of splash is possible. This venting could take place through an existing brick or masonry chimney, but if you're struggling with choosing between direct vent vs. The vents on indirect vented goggles are normally adjustable so they can be turned to fit the user's needs. Vent free vs vented gas logs pt 1.