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12" F8T5 LED Tube for Fluorescent Fixtures (FL-T5-66)

(12 reviews) Write a Review
On Sale
Now: $19.95
Was: $24.50


Our ultra-bright replacement LED tube for easily replacing your existing 12" DC (12V or 24V) fluorescent tubes inside your boat's existing fixtures.

This lamp outperforms the standard F8T5 8W tube and draws less than 0.350 Amps at 12VDC!

*For use in any 120/220V AC application, simply replace your ballast with one of our AC-DC LED Drivers.

See recent customer reviews here.

Choose this bulb if you have an existing 12VDC or 24VDC fluorescent tube fixture which uses one or more 12"(30cm) fluorescent F8T5 tubes.  These bulbs feature our built-in Constant-Current chipset, so they will work on either 12VDC or 24VDC (10-30VDC range). 

Replaces all F8T5, Philips TL8W/29, and 90248 fluorescent tubes in Aqua Signal Series 15 Antibes and Malaga fixtures, as well as Thin-Lite Model 111, 112, 130, 192, 652, 732 and 742 fluorescent 12V boat or RV fixtures.  It also fits the Seachoice # 06411, 06421 fixtures.  In fact, this bulb replaces any 12" (11.75") x 5/8" T5 12V or 24V 8W tube.

If your fluorescent 12V or 24V ballast needs replacing, now is the time to upgrade to LED at about the same cost as a new ballast. No ballast required!

Available Output Colors:

  • Natural Daylight White (Fluorescent White) 6150°k color temp.
  • Bright White (Neutral White) 4100°k color temp
  • Warm White (Soft White) 2950°k color temp
  • Red (for maintaining night vision).

The Natural Daylight White F8T5 is brighter than the Bright White or Warm White, and looks exactly like a natural-white or daylight-white color fluorescent.  The Bright White is a mid-tone neutral color, that is slightly warmer than the Natural White, but slightly cooler than the Warm White.  All of our tubes are significantly brighter than their fluorescent counterparts.

The Red F8T5 LED fluorescent replacement tube is a 2.2W (0.18A) bulb which utilizes 18 5mm Red LEDs to provide the perfect intensity for preserving night vision. These bulbs are the perfect LED replacement for the Thin-Lite Model 180 and Model 190 dual (red/white) F8T5 fixtures.

  • Voltage: 10-30VDC
  • Wattage: 4.5W
  • Amperage (12V): 0.35 Amp
  • Luminous Flux: 560 Lumens NW; 325 Lumens WW
  • Beam Angle: 120°
  • Dimensions: 300mm x 8.5mm
  • Replaces: 12" (11.75") F8T5 fluorescent tubes (G5 base)
  • Warranty: 2 years

Of course, performance and life-span with LEDs is all about thermal management and current control. These tubes features 66 high-efficacy surface-mount 3528 format LEDs, bonded to an engineered thermal-substrate, which conducts and dissipates heat directly to a high-surface-area fluted aluminum thermal heat-sink structure enveloping the emitter board. This, along with our non-resistive and highly-efficient converter-driver allows us to drive the LEDs at maximum power in the same form-factor as your original tube.  While they only draw 4.5W, they have more light output than an 8W fluorescent, and they last much longer, and don't attract insects like the UV-producing fluorescents do.

NOTE: These LED bulbs have our built-in constant-current driver already installed, but they do not require the high-voltage ballast that is in your current fluorescent fixture.  While the bulbs drop right into your fixture, your fixture will require a slight modification, which involves simply bypassing the fixture's existing ballast.  It is a simple modification requiring nothing more than a wire-cutter and 2 butt-connectors. Click HERE for instruction sheet. For a twin tube fixture, reference the video HERE.

See us convert your existing generic fluorescent fixture, or your Thin-Lite type fixture in less than 5 minutes in the videos below:


If you don't wish to modify your existing fixture, or if your existing fixture is old and crummy looking, we offer several styles of economical fixtures pre-configured for use with our tubes.

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12 Reviews

  • 5
    12" F8T5 fixture replacement

    Posted by Mike Greenstreet on 9th Dec 2019

    I used this LED replacement for the fluorescent light in my Eurovan camper. Installation was quite easy but I really appreciated the video instructions. Much better light than the old one and it comes on instantly. Overall a fine product.

  • 5
    Really bright

    Posted by Leslie Troyer on 12th Mar 2019

    I upgraded a dual tube fluorescent bulb fixture with these. Had to reckless the head cause I could see all the spots missed that weren’t noticeable with the old bulbs.

  • 5
    Great Light, Low Energy

    Posted by Captain Dom on 14th Jun 2018

    Simple installation for a real DIY type of gal or guy. Replaced all 10 lamps in 5 fixtures on my sail boat. Had to drill out rivets and remove ballasts and wire the 12V power directly to the sockets. About 30 minutes per fixture. A real battery saver compared to the original flourescents and much brighter. Changed out all the other types of lamps as well. Very happy with Marine Beam products.

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