Technical Spec 551 Series FUNCTION 551-15 551-20 1 Full Air convection O O 2 Heating Zone (upper 4/5, Down 4/5) 4/5 8/10 3 Heating Length 1,020mm 2,200mm 4 Mesh Conveyor Width 405mm 405mm 5 Inlet Height Conveyor 45mm O O 6 Built in Temperature Profiler O O 7 Parameter Memory O O 8 Conveyor Speed 15cm ~ 90cm/Min O O 9 7” Touch Panel Control O O 10 Base Cabinet opt O 11 Commun..