... -fold, 650x1800MM(WXH)Wall panelEPS heat preservation panel double skinned ,tongue and groove construction, thickness: 50MM ... steel.Intake fan2 double-intake centrifugal fan, 2X4KW,capacity:24000m3/hExtract fan1 double-intake centrifugal fan, ... 5.5KW,capacity:18000m3/hHeating systemRiello G20 oil burner,200000Kcal, Stainless steel heat exchanger, highest temperature 80C,1 ...