Made of stainless steel, durable and strong, rustproof and wear-resistant. With a fine mesh design, these vent covers effectively prevent potential damage to your home while providing efficient ventilation. Features a 45 louver to prevent rainwater from entering. Built-in fine mesh grille stops debris and small pets from entering the house. Easy to install: Round vent covers come with screws. Install by inserting into the ceiling or wall, then secure to the surface using screws and silicone sealant. Suitable for room exhaust and ventilation use, ideal for garages, sheds, offices, bathrooms, campers, and other areas where airflow is needed. Specifications: Material: Stainless steel Size: 70mm / 80mm / 100mm / 150mm / 200mm (as shown in the picture) Package Includes: 1 x Round Air Vent Cover Note: Please allow 12 cm variation due to manual measurement. Check dimensions carefully before ordering. Due to differences in monitor displays, the actual color may vary slightly from the image.