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4
Install the rough
Rest the rough on the mounting surface.
Tighten the lower mounting ring and washer.
Tighten the tensioning screws.
Install the plaster shield.
Remove the upper mounting ring.
Screw the lower mounting ring and
washer to their lowest position.
Insert the rough up through the hole.
Install the upper mounting ring.
Tighten it as far as it will go without
forcing it.
upper mounting
ring
sealing ring
lower mounting
ring
washer
tensioning
screws
lower
mounting
ring
washer