Tritan™ construction
GUARDIAN is the first air vent ever made from Tritan. This patented material is the most chemical, temperature and impact resistant combination housing on the market.

Isolation check valve
GUARDIAN is again the first with an isolation check valve, which isolates the exhaust air to extend the life of the desiccant while protecting it against volatile and liquid splashes.

Integrated composite vacuum / pressure gauge
This patented feature is a true, accurate indicator of filter conditions.

Stack cartridges to extend breather life even further using the Modular Stack Ring™. This patented feature extends service life, reducing costs and maintenance intervals.