Louvre gravity ventilation grille shutter 400mm

Louvre gravity ventilation grille shutter designed for passive ventilation with automatic gravity-based closing. The louvres close automatically when airflow stops, preventing drafts and unwanted ingress. When the fan is on, the flaps open to allow airflow.

• Size: Diameter 400mm

• Construction: ASA high-quality all weather-resistant and UV resistant exposure plastic suitable for exterior or indoor use.

• Colour: Grey.