Gem Products Clamshell Vent 1-5/8" Heavy Duty Stainless Steel — Pair
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Gem Products 1-5/8" Heavy Duty Stainless Steel Clamshell Vent — Pair
Keep your boat's bilge, cabin, or storage compartments properly ventilated with these heavy duty stainless steel clamshell vents from Gem Products. Sold as a pair, these vents mount flush to the hull or deck and allow air to flow freely while the hinged clamshell cover deflects water and spray. The 316-grade stainless steel construction resists corrosion in saltwater environments and maintains a clean, professional appearance over time.
The 1-5/8" size is the most common clamshell vent for smaller compartments, bilge areas, and storage lockers on powerboats, sailboats, and pontoons. The heavy duty designation means a thicker shell and more robust hinge compared to standard-duty versions — a meaningful difference in high-exposure locations.
Part Details
- Brand: Gem Products
- SKU: GEM-839
- Material: Heavy Duty Stainless Steel
- Opening Size: 1-5/8"
- Quantity: Sold as a pair (2 vents)
- Mount Style: Surface / flush mount
Compatible Applications
- Bilge compartment ventilation on powerboats and sailboats
- Storage locker and lazarette ventilation
- Cabin and below-deck air circulation
- Pontoon boat storage compartment venting
- Any marine application requiring a 1-5/8" clamshell vent opening
Key Features
- Heavy duty stainless steel — superior corrosion resistance in saltwater
- Hinged clamshell cover deflects spray and rain while allowing airflow
- 1-5/8" opening size — fits standard small-compartment vent cutouts
- Sold as a pair — covers both sides of a compartment in one order
- Clean, low-profile appearance suits most hull and deck finishes
Related Products
- Fuel Vent Flush 5/8" 90° — flush-mount fuel tank vent for 5/8" hose
- Seachoice 16141 Stainless Steel Clam Shell Vent — 1-21/32" — similar SS clamshell vent option
- Seachoice 16151 Stainless Steel Clam Shell Vent — 2-5/32" — larger SS clamshell vent
- T-H Marine Clam Shell Vent (2 Per Pack) — alternative clamshell vent pair
- Sea-Dog SS Midget Vent 1-5/8" — stainless midget vent in the same size class
Parts Desk Insights
Clamshell vents are one of those items that get overlooked until a compartment starts smelling or a bilge pump runs more than it should. The 1-5/8" heavy duty pair is the right choice for smaller bilge and storage compartments where you want a durable, corrosion-resistant vent that won't need replacing in a few seasons. The heavy duty version is worth the small price difference over standard-duty if the vent is in a high-exposure location — forward bilge, transom, or anywhere that takes regular spray. Install one on each side of the compartment for cross-ventilation; that's why they're sold as a pair.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.