Some sailors want it all: the clean deck lines of a through-deck installation, the convenience of electric operation, and the proven reliability of Seldén engineering. The Seldén Furlex Through Deck Electric delivers exactly that. This flagship system combines every advantage Seldén has developed over five decades into one premium package.
Why through-deck matters
Walk the docks at any modern marina and you will notice something: the most elegant yachts hide their furling drums below deck. There is a reason for this beyond aesthetics. A through-deck installation removes the drum from the foredeck entirely, eliminating a tripping hazard and freeing up space for sail handling, anchoring, or simply moving around safely.
The visual difference is striking. Where conventional furlers present a bulky drum at deck level, the Through Deck Electric shows only a sleek foil rising from a flush deck fitting. Many yacht designers now specify through-deck systems as standard because they complement modern hull lines rather than interrupting them.
But aesthetics tell only part of the story. Moving the drum below deck lowers the center of gravity, however slightly, and protects the mechanism from UV exposure, spray, and physical damage. The drum stays cleaner and requires less maintenance when sheltered from the elements.
Electric operation: more than convenience
Push a button, watch the genoa furl. Push again, watch it unfurl. Simple as that sounds, electric operation transforms how you sail. Shorthanded crews can manage sail changes without leaving the cockpit. Aging sailors extend their sailing years. And everyone appreciates arriving at an anchorage without the workout of manual furling.
The Furlex Electric system uses a powerful 48V motor that handles even large genoas with ease. Seldén engineered the motor specifically for marine use, with sealed bearings and corrosion-resistant materials throughout. The same motor powers their standalone Furlex Electric system, proven across thousands of installations worldwide.
What sets Seldén apart is their automatic torque limiting. The system monitors load continuously and stops before reaching damaging force levels. This protects your sail, your rigging, and the furler itself. Try to furl a flogging sail in too much wind, and the system simply stops rather than forcing the issue.
The Furlex heritage
Every Furlex Through Deck Electric benefits from technology refined since 1972, when Seldén introduced the original Furlex. That system became the best-selling roller furler in history for good reasons: the patented continuous luff groove that feeds sails smoothly, the load distribution system that protects your forestay, and the legendary Swedish build quality.
The Through Deck Electric inherits all these features. The foil section remains identical to the standard Furlex—meaning the same smooth furling action, the same reliability, and the same compatibility with standard headsails. Only the drum location and drive system differ.
Sailors upgrading from manual Furlex systems often comment on how familiar the Through Deck Electric feels. The furling action, the sail handling, the maintenance procedures—all remain essentially unchanged. You are buying proven technology in a more sophisticated package, not a completely new and unproven design.
Comparing your Seldén options
Seldén offers several paths to electric genoa furling. Understanding the differences helps you choose wisely.
The standard Seldén Furlex remains the entry point: manual operation, on-deck drum, proven reliability, and the most accessible price. Thousands of cruising sailors choose this system and never need more.
The Furlex Through Deck adds the below-deck drum for improved aesthetics and deck space, while retaining manual operation. This suits sailors who value clean lines but prefer the simplicity and lower cost of manual control.
The Furlex Electric provides push-button convenience with a conventional on-deck drum. You gain electric operation at a lower investment than the through-deck version, accepting the visible drum as a trade-off.
The Furlex Through Deck Electric combines both premium features: hidden drum plus electric drive. This represents Seldén's ultimate genoa furling solution for sailors who want the best of everything.
Installation considerations
Through-deck installation requires more planning than standard on-deck mounting. The drum needs space below the foredeck—typically in a sail locker or dedicated compartment. Access for maintenance must be considered. And the deck penetration needs proper sealing to prevent leaks.
Most production boats can accommodate through-deck installation, but the specifics vary. Older designs sometimes lack adequate space below the stem fitting. Racing boats with minimal interior volume may need creative solutions. A professional rigger can assess your boat and recommend the best approach.
The electric system adds its own requirements: 48V power supply, control wiring to the cockpit, and appropriate circuit protection. Seldén provides comprehensive installation manuals, but most owners opt for professional installation given the complexity involved.
Plan for the installation during a winter layup or refit rather than mid-season. The deck work, wiring, and commissioning take time to do properly. Rush the job and you risk leaks or electrical issues that spoil your sailing.
Who should consider this system?
Performance cruisers: If your boat blends cruising comfort with racing capability, the Through Deck Electric matches that philosophy. Clean deck for crew work, effortless sail handling for short-handed passages, and the reliability needed for serious offshore sailing.
Shorthanded sailors: Couples and solo sailors benefit most from electric furling. Managing a large genoa single-handed becomes straightforward rather than a wrestling match. The cockpit-controlled operation keeps you safe and in command.
New yacht buyers: Specifying through-deck electric during construction costs less than retrofitting later. If you are commissioning a new build or semi-custom yacht, consider including this system from the start.
Comfort-focused cruisers: Some sailors simply prefer pushing buttons to pulling lines. Nothing wrong with that. The Through Deck Electric makes genoa handling effortless, letting you focus on enjoying the sailing rather than working the boat.
Sizing and specifications
Seldén offers the Furlex Through Deck Electric in multiple sizes to match different forestay lengths and boat sizes. Key specifications to verify:
- Forestay length – measured from deck to masthead sheave
- Forestay diameter – the system must match your existing wire size
- Maximum sail area – ensure adequate capacity for your largest genoa
- Below-deck clearance – confirm sufficient space for the drum unit
The Seldén sizing charts provide detailed specifications for each model. Work with your rigger or dealer to select the correct size—an undersized system risks premature wear, while oversized adds unnecessary cost and weight.
Living with the system
Owners report that the Through Deck Electric quickly becomes indispensable. What initially feels like a luxury soon becomes the normal way of handling sails. Going back to manual furling feels like going back to hand-cranking engine starting.
Maintenance requirements stay modest. The below-deck drum needs periodic inspection and lubrication—annually for most sailors, more frequently for heavy use. The electric motor requires little attention beyond keeping connections clean and dry. The foil section follows standard Furlex maintenance: occasional freshwater rinse, visual inspection for wear, and prompt attention to any issues.
Spare parts remain available through Seldén's extensive dealer network. The company maintains inventory for systems decades old, so you need not worry about future support. Should problems arise, diagnosis usually proves straightforward because the mechanical design avoids unnecessary complexity.
The investment perspective
The Furlex Through Deck Electric costs more than simpler alternatives. That premium buys genuine advantages: cleaner aesthetics, easier operation, proven reliability, and long-term support. For sailors who prioritize these qualities, the investment makes sense.
Consider also the resale value. Yachts equipped with premium furling systems command higher prices. Buyers recognize quality and pay accordingly. The Through Deck Electric may cost more initially but returns much of that premium at sale time.
Compare the cost against other boat upgrades. New sails, electronics, and engine work often cost similar amounts with less dramatic impact on daily sailing enjoyment. The Through Deck Electric transforms every sail you make, every trip to the anchorage, every passage offshore. Few upgrades deliver such consistent returns.
Making your decision
The Seldén Furlex Through Deck Electric represents the pinnacle of genoa furling technology from a manufacturer with fifty years of experience. It combines proven mechanical design with modern electric convenience and premium through-deck installation.
Not every sailor needs this level of equipment. The standard Furlex serves perfectly well for many boats and budgets. But for those who want the ultimate in genoa handling—clean decks, push-button operation, Swedish engineering quality—the Through Deck Electric delivers.
Visit our product page for detailed specifications, sizing information, and current pricing. Our team can help assess whether this system suits your boat and sailing style. Because when it comes to something as fundamental as headsail handling, getting the right equipment matters.
