Lambro Universal Vent Guard is designed to keep pests from burrowing into exhaust vents, providing reliable protection for your home or building. This vent guard features a hinged access design, making it easy to clean and maintain without hassle. It fits over most 3-inch and 4-inch exhaust vents, making it a versatile choice for various applications. Made from durable plastic and finished in white, it both functionality and a clean appearance. The package includes one vent guard, size 4 inches, model number 1491WG. Model Number: 1491WG