Self-regulating Extraction Vent BAR 30

Self-regulating extraction vent BAR30 made of white polystyrene, suitable for installation in kitchens, bathrooms, or other rooms requiring airflow regulation. Models: BARJ: with gasket sleeve, for direct mounting on rigid duct. BARP: with sleeve with plasterboard anchoring supports, for mounting on plasterboard panels and with flexible duct. BAR: without sleeve.