【High-quality material】 The round ventilation grille is made of stainless steel and carefully machined. It is resistant to external environmental influences such as snow, rain, frost, sun.【Universal】 The metal ventilation grille is suitable for indoor and outdoor use. There are mosquito nets inside, very light.【Easy to assemble】 The front slats slope like a roof, so it will not rain. The grille does not need to be screwed and is easy to assemble.【Wide range of applications】 The ventilation grille can ventilate many rooms: kitchen, toilet, bathroom. Keep mice, flies and insects away.Material: stainless steelFront diameter: 145 mmDrilling diameter: 98 mmHeight: 40 mm