Attwood SL34305 Gas Spring 20" Extended, 12" Compressed, 30 lbs.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Attwood SL34305 gas spring is a popular replacement for marine deck hatches and compartment doors—built to deliver smooth lift performance with a 30 lb output force and a 20" extended / 12" compressed stroke.
Key Features
- 20" extended length and 12" compressed length (30 lb output force).
- Marine-focused durability tested for corrosion resistance and cycling life.
- Made with bio-degradable, no-hazard-to-water grade oil (WGK) for an environmentally friendly option.
- Passes ASTM B117 salt spray testing and a 30,000-cycle lifecycle test.
- Mounting brackets are available separately.
Intended Use
- Marine deck hatches and access ports
- Compartment doors and hatch-lift applications
- Boat hardware requiring a replacement gas spring (match lengths/force and attachment style)
Product Details
- Product: Attwood SL34305 Gas Spring 20" Extended, 12" Compressed, 30 lbs.
- SKU: 23-SL34305
- Output force: 30 lbs.
- Stroke/length specs: 20" extended, 12" compressed.
- Mounting brackets: available separately.
Parts Desk Insights
Best Use Case: Replace a worn or weak gas spring on a marine hatch/compartment door when you need the same extended and compressed lengths and the same spring force to maintain lift balance and hold-open behavior.
Common Issues: Most installation issues come from choosing a spring with the wrong extended/compressed length or a mismatched end attachment/mounting configuration. Before install, confirm the spring’s lengths and force match the original setup and use the correct mounting brackets/attachment points for the hatch hardware.
Related Products & Accessories
- Attwood mounting brackets (available separately) - Browse the deck hatches & access ports accessories to select the correct bracket set for the SL34305 attachment style.
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.