The Left Line and Right Line are set up in a similar fashion to the Center Line. Each of these lines are in their own separate subnet that is both different from each other and different from the Center Line. Regardless of whether these merging lines are an Conventional Spur arrangement or a 90˚ T-Merge arrangement; the conveyor zone that discharges product onto the Merge Zone must be the most downstream zone if its particular subnet. The following figures illustrate this for an Conventional Spur Left Line and a 90˚ T-Merge Left Line respectively. The same would apply if these were Right Line examples as well.