The internal chamber volume, l 64 Dimensions of useful volume, WxHxD, mm 400h400h400,Dimensions, WxHxD, mm,750h1650h800,Temperature range, ° C-70 ... + 150 Tolerance, ° C± 1,Power Options 380V ± 5% / 50Hz Cooling air Viewing window is Technological holes, d100 mm.