Nicro Day/Night Solar Vent 4" – Stainless Steel
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Nicro Day/Night Solar Vent 4" – Stainless Steel
A premium solar-powered marine vent that runs day and night — no wiring, no shore power, no hassle. The 4" Nicro Day/Night Solar Vent moves over 1,000 cubic feet of air per hour (24,000 cubic feet per day), making it one of the most effective passive-replacement ventilation solutions available for enclosed boat cabins. The stainless steel body is built for long-term marine durability and suits dark-trimmed or offshore-style boats.
Key Features
- Moves over 1,000 cubic feet of air per hour — 24,000 cubic feet per day
- Solar-powered with rechargeable NiMh battery — operates for up to 24 hours without sunlight
- No wiring required — completely self-contained installation
- Stainless steel body — corrosion-resistant and built for long-term marine use
- Whisper-quiet operation — suitable for sleeping cabins and live-aboard use
- Built-in on/off fan switch, LED cabin lights, and intake/exhaust direction switch — all accessible from inside the cabin
- Complete air and green water shut-off from below for rough weather
- Threads into the included deck plate and is removable from outside without tools
- Replaces Nicro 4" snap-in deck plates and Day/Night Plus models (fits existing holes once snap-in plates are removed)
- Includes white plastic interior trim ring, insect screen, mounting hardware, and installation manual
Parts Desk Insights
Best use case: The 4" model is the right choice when maximum airflow is the priority — it moves significantly more air than the 3" version, making it better suited to larger cabins, saloons, and engine compartments where ventilation demand is high. Like the 3" model, it’s ideal for boats left on a mooring or at anchor for extended periods where continuous moisture control matters. The stainless steel body is the preferred finish for offshore boats and dark-trimmed vessels. For the white body version of this 4" vent, see the Nicro Day/Night Solar Vent 4" – White. For the smaller 3" versions, see the Nicro Day/Night Solar Vent 3" – Stainless Steel or the 3" White. For passive low-profile vent options, see the Attwood Deluxe Low-Profile Cowl Vent.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.