... , 4.gas permeable, oleophobic , 5.waterproof , Protective vents Reduce condensation, prevent contamination, Equalize pressure, gas ... , waterproof ,anti –dustBrief introduction of the Protective Snap-In VentsProtective vents are placed over ports ... code)" protection provided by enclosures (IP code ) standards and the "International Maritime Dangerous Goods Code"(IMDG CODE) strict requirements. protective ...