When inserting the hex nuts
be sure to center the nuts in the middle of the holes
so that they
will align with the screws. You can use a needle nose pliers or even a pen tip to adjust the
location.
The adapter is then connected to the fan/filter combination using 40mm M4 screws.
Insert all 4 screws only a small way in before attempting to tighten.
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6
Aligned
Correctly
Aligned
Correctly
O
ff
Center
O
ff
Center