Wisdom Audio Series S90i User Manual
Page 27
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27
On important characteristic of any replacement HVAC grille or grate you may
elect to use for aesthetic reasons: many such grille have adjustable louvres to
direct the flow of air. These should be either removed or frozen in place with
liberal amounts of glue in order to avoid rattles. A lot of air will be flowing
through these grilles, in both directions. Anything that can rattle, will rattle.
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