QUANTUM BY THOR MOTOR COACH No matter how you choose to spend your time or your money, the Quantum fits your needs. 3TRAX is our in-wall slideout system, housing all the moving and mechanical parts within the sidewall of the motorhome. This triple track design supports large rooms, like those found in full-wall slideouts, ensuring simple, reliable, maintenance-free operation. What sets 3TRAX apart is the patented rail system, in-floor roller guides and electric motor design. For more information, visit thormotorcoach.com/3TRAX. Please call me Joe Gagnon on my cell # 863-368-2240 so I can answer any direct questions you may have from the unit. I can also do a real time walk around for you from that phone number.