Simple and Efficient Installation: Whether installing on a wall or ceiling, setup is hassle-free. The vent stays securely in place with 4 screws, and a rubber gasket is provided to dampen noise, ensuring a quieter operation in indoor and outdoor environments. perfect for Home & Commercial Use: This 4-inch external extractor vent is an excellent choice for a range of applications including dryers, kitchens, bathrooms, offices, garages, sheds, campers, and more. It's perfect for anyone needing reliable exhaust and ventilation. Constructed with Durability in Mind: Made from heavy-duty 304 stainless steel, this extractor vent cover offers superior durability, resisting rust and . Its robust construction guarantees long-lasting performance in all weather conditions. Advanced Ventilation Technology: Designed to prevent air backflow, the vent has a one-sided sealed flap and includes a foam stopper inside the hood. This ensures it operates quietly while protecting against outdoor noise, and intrusion by birds, rats, and rain., Manufacturer: CTRLZS