Threads into included deck plate, and is removable from outside without tools. The whisper quiet vent moves over 1000 cu. ft. of air in an hour or 24,000 cu. ft. of air a day (4" model). On/off fan switch, LED lights and intake/exhaust switch accessible from inside the cabin for ease of use. Color Stainless Steel Size 4"

• 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