For complex and changeable outdoor environment, sudden and frequent pressure changes are a threat to sealing structures and casing integrity. IPRO adhesive vent is made of ePTFE membrane, which has a unique microstructure with natural hydrophobicity, plus uniformed pore size, high porosity, good air permeability, and high chemical corrosion resistance, enabling quick pressure equalization for outdoor lighting, while ensuring a dry casing and long service life of lamps.