2003 Subaru Outback Owner's Manual - Page 318

J Roof rail and crossbar (if equipped) D For cargo carrying purposes, the roof rail must be used together with a roof crossbar kit and the appropriate carrying attachment. The roof rail must never be used alone to carry cargo. Otherwise, damage to the roof or paint or a dangerous road hazard due to loss of cargo could result. D When using the roof crossbar kit, make sure that the total weight of the crossbars, carrying attachment and cargo does not exceed the maximum load limit. Overloading may cause damage to the vehicle and create a safety hazard. CAUTION HB8016BB The roof rail is not designed to carry cargo by itself. Cargo can be carried after securing the roof crossbar kit to the roof rail and installing the appropriate carrying attachment. When installing the roof crossbar kit, follow the manufacturer's instructions. Roof slats are not designed to carry or hold cargo, but are designed as the protector to prevent the roof from being damaged by cargo while it is being loaded and unloaded on the roof crossbar or on any carrying attachment. When you carry cargo on the roof using the roof crossbar kit and a carrying attachment, never exceed the maximum load limit explained below. You should also be careful that your vehicle does not exceed the Gross 8-20