Circulates fresh air in boat cabin? protects against mold mildew and musty air. Now with even more power the Nicro Day/Night Plus moves over 1000 cubic feet of air in an hour or 24000 cubic feet of air a day (4" model). With direct to deck installation it easily replaces any existing 4" NICRO vent product. The Day/Night Plus has complete air and green water shut-off from below as well as a built-in on/off fan switch.
MFG# N20703W UPC# 035028207032