Great for Vent Protection: The dryer vent cover guard for bathroom fan vent is a great solution for vent protection. Using the exhaust vent animal guard to keep small animal and birds out of the dryer vents/exhaust vents while allowing airflow, no more nest in the dryer vents. Not easy to fade&crack: Our dryer vent bird guard vent cover for bathroom exhaust vent is made of heavy duty galvanized steel with white power-coat , not easy to fade and crack, sturdy than plastic dryer vent bird guard, not easily chewed by animals. Universal Dryer Vent Cover Guard: The universal outdoor dryer vent cage cover for exhaust fan vent fits most 3 inch to 4 inch dryer vents cover or bathroom exhaust vent, fits most kitchen or bathroom exhaust vents/clothes dryer vent/bathroom fan vent. Easy to install: The dryer exhaust vent cover guard for dryer vent cover is easy to install, package includes mounting screws, just cover the entire dryer vent cover and tighten it with screws, and has plenty of room for the vent flap to open. Warm tips: Pls clean the lint or debris on the dryer regularly. Color: Black Material: Metal Package Contents: 1 x Bird guard 10 x screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.