We have all sorts of ways to give your boat more Ventilation. Look here if you want a Blower, Fan, Cowl or Mushroom Vent, Hatch, Portlight or a Slot Ventilator in assorted shapes and sizes. We also have Tank Vents, Louvered Vents, Vent Hose or Ducting, and Wind Scoops. We supply an assortment of Solar-Powered Ventilators, too!