Great space saving solution height adjustable to suit any length of document universal racking system suits a0 a1 a2 a3 binders superior front loading design allows clear and easy access to binders stored sheets etc quick and easy to remove and replace binders unversal racking system all binders sizes interchange between trolleys and wall racks trolley is required to be greater or equal to the size of the binder binders can be addedremoved from the left ot right side binders s