First Degree Fitness Commercial Vortex-3 Fluid Rower Absolute comfort, stability & performance with 20 levels of patented variable fluid resistance Seat at "office chair" height for ease of entry and exit Extra-long anodized aluminum seat rail will suit the tallest of people Maximum user weight 450 lbs. International full commercial warranty: 10 years on frame, 3 years on tank & seals, and 2 years monitor and wear items