Martin Audio MLA Mini User Manual page 35

Step 4: Next, raise the two front lugs of the Flying Frame to their upright position, and secure.
These will mate with the front slots of the first Mini. Fit the first MLA Mini cabinet onto the
Flying Frame, locking the two front slots into place with Flying Pins. Note that the front of the
Flying Frame should be flush with the lower front edge of the cabinet.
Step 5: Lift the rear of the cabinet and attach the top end of the Ground Stack bar to the rear
bracket by matching the Ground Stack symbol on the bar to the Ground Stack symbol on the
bracket. Secure with a Flying Pin.