Stadium BM418 127mm Core Drill Ventilator – Versatile, Anti-Draught Ventilation Solution The Stadium BM418 127mm Core Drill Ventilator is designed to provide effective ventilation while minimizing drafts, making it an ideal choice for homes, offices, and various indoor spaces. Featuring multiple outer cowl color options and a sleek white internal grille, this core drill ventilator not only ensures optimal airflow but also complements your interior decor. Equipped with an anti-draught baffle, it allows you to control the Effective Free Area based on your ventilation needs, providing up to 100cm² free area without the baffle and 70cm² with the baffle for a more controlled airflow. Key Features: 127mm (5) Core Drill Ventil