Excellent material: Made of high-quality stainless steel, environmentally friendly, safe, sturdy, durable, and rustproof. Excellent workmanship and exquisite decoration are essential for a new, modern home. Modern design: Flat round cover with 45° curtains, built-in fly net, rain and windproof shutter, and windproof net that prevents small animals from entering the house. Easy installation: By adjusting the exhaust valve control valve, the exhaust valve can be easily controlled according to your needs. It can be perfectly fixed to the ceiling or wall and is easy to disassemble for easy cleaning. Widely used: The ventilation duct cover is perfect for internal exhaust, reducing noise, ideal for bathroom vents and extractor hoods, air conditioning units, fans and kitchen vents. Ventilation and ventilation: The circular mesh structure allows wind to circulate easily in the space you live in, giving you a fresh and odorless living and working environment.