Best little evaporator ever has a sap-raider with hood and preheater will boil off 100 gallons an hour made 400 gallons of syrup with 3 cords of wood at 8% sap last year using with 1300 taps. hate to see it go but at the point where i want more taps and need a bigger evaporator. Has 16 inch flues 8 drop 8 raised