... equalize pressure, gas permeable, oleophobic , waterproof , ECU Protective Snap-In VentsReduce condensation, prevent contamination, equalize pressure, gas permeable, oleophobic ... of the ECU Protective Snap-In VentsECU (electronic controller unit)Protective Snap-In Vents are placed in these devices to protect ... -profile options fast, reliable attachment for high-volume applications snap-in vent plug