Boss CLIMA 3T User Manual page 19

Assembly Procedure
Fit one horizontal brace (red) onto the vertical of an end frame,
2
just above the bottom rung, with the claw facing outwards.
Note: All locking claws must be opening before fitting.
Position the second end frame as shown and at the other end
3
of the horizontal brace onto the vertical, just above the bottom
rung. Fit a second horizontal brace between the bottom rungs on the
other side of the frames to square the tower.
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Locked
18