HAZARDOUS FREIGHT! An additional hazardous fee will be applied to your order at time of shipment. Your order will be shipped Fed Ex Ground and must be signed for at time of delivery by a person 18 years or older. Fireboy Systems Inc. MA2-500-227 Fire Extinguisher. Covers up to 500 cubic feet. Fireboy MA2 Series. Manual/Auto discharge features positive backup via a mechanical pull cable. Diesel powered craft must also install Auto Engine Shutdown System. For use in USCG inspected vessels. USCG, Factory Mutual, and Bureau Veritas Approved.