Brass Screw-In Vents 1.Feature: designing in thread sealing , make sure waterproof can be more than Ip68 . Products can be waterproof ,dustproof, breathable . it can chose different Protection grades and breathable products ,according to request. the main body is copper Plating Ni , it has good Structure strength and weather resistance. can Equipped with the imperial and the metric system of different size can also be accepted, installation teeth non-standard screw Material:brass Ni Temperature range 4.Installation method : Can direct the assembly holes tapping installation( it fit to thickness board or not convenient to install in it .) Balance pressure, eliminating moisture, dustproof. thermal various types of outdoor electronic products,the cabinet often suffered from temperature change, wind and rain erosion and the sun's radiation, Environmental temperature fluctuations, can create pressure difference of equipment, constitutes a negative impact Shell Waterproof dustproof heat through valve help balance inside and outside pressure, preventing air front housing and water through the sealing strip into the cabinet interior, and can effectively protect the integrity of the seal. Breathable membrane can also accelerate out moisture vapor condensation, thus reduce speed,gives protection. Waterproof dustproof heat through valve can adjust pressure, thus avoid gas accumulation.Breathable membrane in this case the role of mechanical safety valve, equivalent and it also can play protective barriers, stop dust, salt and other corrosive liquid invasion, to extend product performance and life, reduce unnecessary maintenance and waste, the cost savings. Suitable for: household appliances, audio equipment communications equipment, sensors, outdoor lighting, large outdoor LED display, computer equipment, automobile exterior lighting, monitoring equipment, etc More information pls feel free contact Ms Jalila Tang 500PCS/BOX