Used mainly for high volume and traffic areas, Jracking Very Narrow Aisle (VNA) Racking is the ideal choice for the optimal use of floor space and anywhere that has a narrow aisle access and high density storage needs. This type of racking is operated with "very narrow aisle" trucks. They are guided through the aisle allowing faster and easier operation. Inductive guidance often replaces the rail guidance. The design of the ground guidance depends very much on the type of lift-truck. The low guidance profiles allow placing pallets on the floor, the high guidance profiles require extra bottom beams.