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UltraBright™ Slim Series LED Strip Light - 1/8" Wide (3.5mm) (9ft 10in)


Slim LED Strip light

UltraBright™ Slim Series LED Strip Light


The Slim Series is an ultra-thin (3.5 mm wide) strip light that is outfitted with extremely bright LED chips and a strong adhesive backing. It is one of the thinnest LED strip lights on the market. Sometimes referred to as "LED tape lights," the flexible design of LED strips allows for bright lighting almost any space you can imagine. These strips are great for providing elegant, discreet lighting and are commonly used by architects and lighting designers in professional installations.

IMPORTANT: Because of the small surface area, the strip should be attached to a heat sink like aluminum or another heat dissipating material to make sure the strip stays within a healthy operating temperature.

Note: This product has been discontinued and will not be restocked. Check out the updated version here.


Top Features and Benefits:

   Slim series LED strip Light mid output 366 lm per foot   low enerygy consumption LED strip lights 4.4 Watts per foot    9 ft maximum run length in series LED strip lights     super slim led strip light for narrow spaces

  • ✔ Ultra slim! only 1/8" (3.5 mm) wide

  • ✔ High efficiency of  4.4 Watts/ft

  • ✔ Mid-output up to 366 lm/ft (1200 lm/m)

  • ✔ Available in 12V

  • ✔ Fully dimmable

  • CRI of 80+

  •  50,000 hour lifespan (8 hours/day for 17 years)

  • ✔ 7-year warranty

Applications and Use:

These strips are installed in a wide variety of applications including: 

  •  Mirror backlighting

  •  Inside of products

  •  TV backlighting

  •  Under kickboards

  •  Display case lighting

  •  Inside cabinets

  •  Under counter lighting

  •  Hotel room accent lighting

  •  Cove lighting

Brightness Level

Check out our White Output LED Strips Page to compare the output levels of our Static White Strips.

At 366 lumens per foot, this mid-output strip is perfect for bright accent lighting.

midium brightness accent lighting LED strip lights


Why choose Slim™ Series?

This strip is the thinnest LED strip light we offer with only 1/8" (3.5 mm) in width, but powerful enough to create a beautiful line of light in small spaces, making it a great fit for different applications inside and under cabinets, inside any product, or any other project that requires a slim LED strip light. Our Ultrabright™ Slim Series has a 50,000 hour lifespan and a 7-year warranty.




Examples of what the SlimSeries can do to your space


staircase lighting design ideas with slim led strip light

 Stairway Lighting


Kitchen shelving lighting example with LED strip lights

 Shelving Lighting


stairway lighting using slim LED strip light

 Stairway Lighting


Kitchen cabinet lighting using LED strip lights

 Shelving Lighting



  • ✔ 4.4 Watts/ft

  • ✔ 50,000-hour lifespan (8 hours/day for 17 years)

  • ✔ 7-year warranty

  • ✔ CRI of 80+

  • ✔ Ultra Slim! Only 1/8" (3.5 mm)

  • ✔ Available in 12V

  • ✔ Max run in series: 9'10"

  • ✔ LED type: SMD 3014

  •  Efficacy up to 83 lm/W

  • ✔ Can be cut every 1" (25 mm)

  •  Short LED pitch 3/8" (9 mm)

  •  36 LEDs/ft (120 LEDs/m)

  •  Single-bin selection (3-step MacAdam)

  •  3M VHB 4930 adhesive

  •  120° beam angle

  •  Height: 1/16" (2 mm)

  •  2oz pure copper PCB

  •  Operating temperature: -4ºF-104ºF (-20ºC-40ºC)

Product SKU Color CCT Lumen / Foot
Luminous Efficacy
(Lumen / Watt)
CRI TLCI Gamut Score
Relative Fidelity Score



344 lm/ft (1,128 lm/m) 








366 lm/ft (1,200 lm/m)






certified-ce-led-strip-lightcertified rohs LED strip lights


UltraBright™ Slim Series LED strip light FAQ 

Q: Do you have solderless connectors for the slim series?

No, we do not. We recommend soldering with a very steady hand! 

Q: What is the product warranty?

we offer a 7 to 15-year warranty on all of our LED strips to all of our clients. The warranty on power supplies ranges from 2 to 7 years which is model dependent.

Q: What is the lifespan of your strip lights?

Our lights have been rigorously tested and have an expected lifespan of 50,000 hours before dropping to 70% luminosity. This means that if you were to use your lights 12 hours a day, every day, the lights would be expected to last longer than 10 years. Even after that time has elapsed, the lights will maintain a brightness of 70%. Higher-output strips require a heat sink to reach the expected lifespan and beyond.

Q: What is color temperature?

The color of light can be quantified by referring to its color temperature. White light is measured in Kelvins (K). Most white lights fall in a spectrum between 1800K and 6200K. When decreasing from 3000K, the light is noticeably warmer. On the other end of the spectrum, the lights have a blue-ish tint and cooler tone when passing 6500K.

Q: Which color temperature should I choose?

Choosing the correct color temperature lights for your project is very important, and as important as the brightness you choose. Consider the look and feel you want your project to have. What other color lights will be present? What material and color are the materials you wish to light? We can help you choose!


Q:What are lumens (lm)?

This is a quantifiable amount of light produced by an LED strip or other light-producing product. This is one way we can measure light output.

Q: Can I cut the strips myself?

Yes, LED strips are made to be cut to your desired length. Using sharp scissors, you can cut the strip every few inches (on a line that's marked after every third LED).

Q: What do I need to turn on my lights?

To turn on LED strips, you will need to connect to a LED power supply. For connecting strips to the power supply we recommend soldering to make the strongest connections. Another option is to use our solderless connectors, which is a faster and easier way to install LED strips.

Q: Which Power Supply do I need for my (x) feet of LEDs?

The length of LED strip lights of your project will determine the size of the power supply you need. View our Power Supply chart to find the exact LED power supply you need.

Q: Which power source do you need for my project?

LED Strip Light Power Usage Calculator - Which power supply do I need? 


Data Sheet

UltraBright Slim Series Data Sheet

IES / LDT Files

2400K IES / LDT | 2700K IES / LDT | 3000K IES / LDT | 4200K IES / LDT | 6200K IES / LDT

Photometric reports

2400K I 2700K | 3000K  | 4200K | 6200K  


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