Sea-Dog 304 SS Fixed Flange Antenna Base – 1-1/2" | SED-329517-1
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You have 30 days to request a return. All sale items are final sale.
Sea-Dog 304 SS Fixed Flange Antenna Base – 1-1/2"
A clean, low-profile deck mount for VHF, AIS, GPS, and other standard marine antennas. This 1-1/2" fixed flange antenna base from Sea-Dog is formed from 304 stainless steel and features a built-in wire feed-through channel, so your coax cable routes directly through the base for a tidy, professional installation with no exposed cable runs on deck.
The flange-mount design bolts flat to any deck, cabin top, or horizontal surface, keeping the antenna upright and fixed in position. At just 1-1/2" in height, it sits low and unobtrusive — ideal when you want the antenna as close to the mounting surface as possible without a riser.
Key Features
- Formed 304 stainless steel – corrosion-resistant for coastal and inshore use
- 1-1/2" height – low-profile flange mount
- Built-in wire feed-through – routes coax directly through the base
- Standard 1"-14 thread – fits most marine antennas
- Flat flange design for deck, cabin top, or horizontal surface mounting
- MPN: 329517-1
Parts Desk Insights
Best Use Case: This base is the right choice for a clean, permanent deck or cabin top antenna installation where you want the coax hidden below deck from the start. The wire feed-through eliminates the need for a separate cable gland or deck fitting alongside the base. The 1-1/2" height keeps the profile minimal — if you need more height above the mounting surface, see the Sea-Dog 304 SS Fixed Flange Antenna Base – 4-1/2" for a taller version of the same design. To raise the antenna further above deck obstructions, pair with a Sea-Dog 316 SS Antenna Mount Extension – 12" or the Sea-Dog 316 SS Antenna Mount Extension – 24". For rail or arch mounting without deck penetration, see the Sea-Dog 316 SS Tube Mount Antenna Base instead.
Material Note: This base is formed 304 stainless steel, suited for coastal and inshore environments. For offshore or heavy saltwater exposure, consider the 316 SS deck mount options in the Sea-Dog antenna base range.
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.