Mantis Compact ComposTumbler Guide D'assemblage page 6

2.2
Alignment Slot
Place the edges of the drum body assembly from step 1 inside the endcap. Be sure to place the fins you
joined in step 1 in the alignment slot near the screen of the vent opening.
Fin
Note that the fins on the end of the drum body Step 2 Complete
extend beyond the slots.
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