... footboard has four types according to having front-armour plate and girder connection or not, which are T1,T2,T3,T4.2 ... (for example 500, 600, 700, 800, 900, 1,000, 1200mm and so on).(series 1 uses 125,155, 185, 215, 245 ... , 275, series 2 uses 125, 165, 205, 245, 275mm and so on).3.Footboard tolerance: width: W±3mm,length: L ...