The Master Flow GNV4BL Goose Neck Ventilator is designed for effective ventilation in gable and louvered applications. It features a durable galvanized finish and comes in a sleek black color. The ventilator includes a damper for improved airflow control, making it suitable for various residential and commercial settings.

• Includes damper for improved airflow control
• Constructed from durable galvanized steel for enhanced longevity
• Designed for effective ventilation in roofing applications
• 4 in. diameter for standard venting needs
• Black finish for a sleek, modern appearance