-Applied to the 6'' dryer vent pipe diameter of 150mm - The soffit vent actual outside diameter is 145mm -Mdcvfrun wall vent cover made of thickened 304 stainless steel, which has good corrosion resistance and heat resistance -Screen mesh design effectively keeps pests from entering homes or nesting -Ideal for all 6 inch duct/stove pipe, bathroom vents and extractors, air conditioning, kitchen fans & vents, indoor outdoor wall vents, heat transfer and ventilation systems, gas & electric dryers, as well as a wide variety of industrial uses -Metal dryer vent cover is easy to install and use, with a strong fit and durability -Portable, quality and long durability