Marinco Rechargeable Day & Night Solar Boat Vent

Rechargeable NiMh battery for up to 24-hour continuous operation No wiring required Circulates fresh air to eliminat mold, mildew and musty air White plastic interior trim ring, insect screen & mounting hardware Replaces Nicro 3" & 4" snap-in deck plates (once deck plates are removed) & Day/Night Plus models