Material: This round air grille ventilation cover is made of 304 stainless steel. Diameter: ø150mm / 6", suitable for all types of domestic and industrial ventilation systems. ;Insect-proof: Improved and thickened version, featuring an insect-proof mesh that effectively prevents insects, birds, and mice from entering. Weatherproof: Our ventilation cover is designed with a hemispherical hood, making it windproof and rainproof. It is easy to install and durable. Application: Ideal for all pipes and ventilation ducts in tumble dryers, air vents, and bathroom extractors, as well as a wide variety of industrial uses. Any questions before purchasing or during use, welcome to contact us, we will reply you at the first time, thank you!