Fireboy MA20275227-BL Manual/Automatic HFC-227 Extinguisher, 275 CU

On board, on guard, 24 hours a day, the safest way to combat an engine room fire. Choosing your system: determine the volume of your engine compartment in cubic feet, L x W x H. Do NOT deduct for engines, fixed tanks, or other equipment. Diesel powered craft must also install the automatic engine shutdown system.