Railex System 200 Trolley Rail installed in a 52’ long tractor trailer. This system was installed more than a decade ago and we have supplied material for additional trolley systems recently. System 200 Slick Rail Storage & Trolley Systems Skills Posted on September 21, 2020 ← Railex System 200 installed for costume storage in a tight space. We included a shelving system on top for folded items. This system is completely free standing with our end-frame and header design. Railex System 200 Trolley Rail installed in a 52’ long tractor trailer. This system was installed more than a decade ago and we have supplied material for additional trolley systems recently. →