... and down, there are two type of Springboard (type A and type B),Type A is integral springboard, Type B is removable(Facilitate collection). In ... , Can widen or decrease according to the customer's requirements. Type A8 means: length 8m , wid 0.6m Integral aluminum ladder ... .Type B8 means: length 8m , wid 0.6m Detachable ladder. typemain ...