The pitch of a pallet flow lane can vary from system to system.  That being said, the most common pitch given to pallet flow lanes is 3/8″ to 1/2″ per linear foot.  To illustrate this, imagine a pallet flow lane that is 20’ long.  If the pitch is 1/2″ per linear foot, the load end of the lane will be 10″ taller than the picking end.  This pitch allows the pallet to “flow” without assistance from the back end of the lane to the front.