... designed as requirement 3.safe, energy saving, economical Specification for Spray Booth YS-20 Inside dimension6900×3900×2650mm(L×W ... for each fan: 10500m3/h.Exhaust air system is optional.Heating system BT18 diesel burner, stainless steel heat exchanger, electric damper ... 4.5S, air capacity is 15500 m3/h, with manual damper for exhaust air.Heating SystemRIELLO G10 oil burner, stainless steel heat ...