An adjustable vent made from robust aluminium in a smart silver finish for a neat and tidy installation. Suitable for fresh air ventilation and warm air systems, the vent has an opening size of 9" x 9". This 9" x 9" Hit and Miss air vent is designed to cover triple brick apertures (229mm x 229mm). It features an adjustable sliding grill to regulate airflow, helping manage stale air, dampness, and odours. Suitable for both fresh air and warm air systems, it works well for both interior and exterior use. Easy to install with screws not included, this vent is ideal for effective ventilation but not suitable for gas appliance venting. Overall vent size: 260mm x 240mm Screw hole distance: 248mm x 230mm For openings up to 229mm x 229mm (9" x 9") Airflow when open: 12800sq mm This adjustable aluminium vent is ideal for providing air flow through a building, helping to reduce problems caused by stale air, dampness, smells and condensation Suitable for interior & exterior use. Designed to cover a triple brick aperture Central sliding point to open and close giving the user full control of the ventilation required, Manufacturer: MAP Vents