Magnaclean air vent

Magnaclean air vent

Magnaclean air vent

HI All
On a Magnaclean air vent is it the square nut in the vent thats supposed to move or the whole round vent as on mine its the whole round vent that moves. When I tighten it back up it feels like its going tight then loose again. Should I replace it ?

by Tally101

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