• 210 CFM, 6.5 sones • Install in ceiling and ventilate directly through the roof with round ducting. • Adjustable hanger bars for 16" or 24" o.c. joists. • All motors are pre-wired plug-in. • Use with 834 filter (optional). • Silver Anodized Aluminium grille finish. Excellent for kitchens, laundries, commercial restrooms, anywhere you want to move a large volume of air.