10″ round duct adapter for 12 X 12 Ceiling Grille
For use with the 12″ X 12″ White interior ceiling grille. Converts the 12 X 12 square to a 10″ round, allowing you to attach 10″ ducting from the interior ceiling grille, to either the Infinity 1100 or Infinity 2200 Whole House Fans. Galvanized steel, made in USA. UPS ground shipping within the Continental US only. All others call for quote.