User-friendly ventilation solutions! Our product offers the convenience of outer wall mounting, making it suitable for various applications, including the decoration of ventilation shaft vents or connection to both rectangular and round air ducts. The inclusion of a gravity backdraft damper ensures effective backflow prevention, while the built-in protection grille safeguards against birds and rodents. Crafted from temperature- and UV-resistant antistatic plastic, our product guarantees durability in all weather conditions. With the option for flush mounting and easy-to-use fasteners, installation is a breeze. Plus, enjoy hassle-free maintenance, making this ventilation solution a practical and efficient choice for any space.