With the extra narrow gearbox located in the center of the frame, the adjacent tillage heads can be placed very close together. This set up is useful for crops that are as close as 9" on center. Typically this frame is used with 5.5"-7" tillage heads.
Model FL Multivators are used with low clearance, low horsepower tractors. Ground clearance under the hex drive bar is only 16" on the FL, so tractors should match accordingly. This frame is used where crops are planted very close together, and ground clearance is not an issue.