PurairADVANCED Ductless Fume Hood, Triple Blower Version, 69 inch / 1800mm Nominal Width, AUTOCAL Airflow Display, Comprising of a P40-HEAD-G-ACAL, P30-XT-ENCL-TRIP, TRAY-P30, (DWYER Airflow Meter Delete), Standard Depth, 230V 50Hz, UK Cord set (unless specified). Requires Minimum Three ASTM-XXX Main Filters and Three Optional ASTS-XXX Safety Filters