Product details:

Broan 512M Through-Wall Fan, 6-Inch 70 CFM 3.5 Sones Product Details: 3.5 Sones 70 CFM HVI Certified 6 inch diameter flexible aluminum duct included Item Description: Broan 512M 6 through wall ventilation fan 70 CFM 3.5 Sones. Easy exterior wall installation features a white interior grille and louvered exterior wall cap with built-in bird screen. 6-Inch diameter flexible aluminum duct included. Accommodates walls from 5-1/4-Inch to 10-Inch. Use with remotely mounted wall switch or Broan model 57W or 57V. Variable speed control (available separately). Wall cap measures 8-Inch square.