This easy to install pressure compensation device for enclosures provides for compensation of pressure at a protection degree of NEMA 4X (IP66). The semi-permeable membrane which is located inside the plug allows air and humidity to leave the enclosure. In the opposite direction, it only allows dry air into the enclosure while humidity and dust from the outside are blocked by the membrane. The stainless steel model is corrosion resistant and perfect for the food industry and any industry that uses electrical/electronic control panels. This product is RoHS and CE compliant.