Boiler & Burner Set B3 – Saito This is a large capacity boiler and burner combination designed to power the T3DR or the T2DR-L. Water tubes are placed in a spiral manner inside the main pipe. This allows the flame to boil the water very efficiently in spite of its long body. Such a large capacity can run several small engines at once. The burner uses methanol fuel and has an operating endurance of approximately 20 minutes. Compatible engine T3DR, T2DR-L Length 350mm Width 75mm Height 120mm Weight 3.5 lbs Note that the pressure gauge shown in the attached photo is not included in the kit.