Stadium BM436 152mm Core Drill Ventilator – Secure, Efficient, and Versatile Ventilation Solution The Stadium BM436 152mm Core Drill Ventilator offers a robust and secure solution for providing ventilation from external walls. Designed with 250mm x 250mm metal grilles and a 152mm (6) diameter tube, this ventilator ensures optimal airflow while maintaining safety. Its use negates the need for larger grilles, reducing potential security risks while offering a 161cm² free area. With a standard tube length of 610mm (24), it’s ideal for a variety of wall installations in both residential and commercial settings. Key Features: 152mm (6) Core Drill Ventilator: Designed for standard core drilling, providing effective