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  • UltraBright™ Design Series White LED strip light reels
  • UltraBright™ Design Series White LED strip light reels
  • UltraBright™ white LED strip backlighting
  • UltraBright™ Natural white hotel cove LED strip lighting
  • UltraBright™ white bar LED strip lighting
  • UltraBright™ white LED strip lighting
  • UltraBright™ white LED strip lighting
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  • UltraBright™ white LED strip lighting
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  • Hotel cove lighting LED example
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  • Hotel cove lighting LED example
  • Hotel cove lighting LED example

UltraBright™ Design Series LED Strip Light

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Product Description

UltraBright™ Design Series LED Strip Light

Hotel cove lighting LED exampleIntroduction:

UltraBright™ Design Series: Powered by belief. True evolution commences as we start to open our minds to new possibilities, new ideas that allow us to step away from the confines of tradition. Our Design series has been developed to allow people to step away from the more traditional light sources when designing their projects and enter a world of new possibilities in design. The high brightness of the strips allow for the creation of simplistic task lighting whilst maintaining the properties of a standard strip light. We balanced a high brightness, high CRI (80+), and low energy usage to create a truly beautiful and efficient product. You need to see if to believe it.

Top features and benefits:

- UltraBright™ Design Series natural white LED strips are fully dimmable, and are a great selection for task lighting
- They're UL Listed, which means they have been independently verified as safe for use within home and business
- They produce 6,600 lumens per reel / 402 lumens per foot  

Available Colors CCTs

Application & Use:

UltraBright™ Series LED strip lights are installed in a wide variety of applications including:

  • Under cabinet task lighting
  • Linear lighting
  • Under kickboards
  • Display / jewelry case lighting
  • Picture backlighting
  • Bar and club lighting
  • Architectural lighting
  • Terrariums / indoor garden lighting
  • Above cabinet lighting
  • Under counter lighting
  • Hotel lobbies
  • Cove lighting
  • Related products

Aluminum Channels

MICRO Alu | PDS4 Extrusion45 Alu Extrusion


Touch Series Single ColorMulti Zone Single Color| Tiny Dimmer | Wireless Wall Dimmer | Lutron Diva


UB-C1 | UB-C2 | UB-C3

Power Supplies

Non Dimmable Driver

12V 96W DPS| 12V 100W Mean Well

Magnetic Dimmable Driver

12V 100W Zurik


  • 5-year Warranty
  • UL Listed
  • High CRI of 80+
  • Fully Dimmable
  • 120° Beam Angle
  • 12V DC Input 
  • Highest Brightness - Up to 469 Lumen/ft (1,539/Meter)
  • Efficiency up to 107 lm/W
  • 36 LEDs / Foot (120 / Meter)
  • Thermal conductive 3M adhesive
  • Short LED pitch of 5/16" (8mm)
  • Only 3/8" (10mm) strip width
  • Thick double layer 2OZ copper PCB for excellent thermal management
  • Can be cut every 1" (25.4mm)
  • Single BIN LED selection to ensure color consistency (3-Step MacAdam)
  • Operating Temperature -30°C to 60°C
  • Maximum Length in Series 16ft 5 in (5 Meters)
  • Highest quality premium packaged 3014 SMD LEDs
Product no. SKU Color - CCT Watts / Foot (Meter) Lumen / Foot (Meter) Luminous efficacy (Lumens / watt) CRI Gamut Score Rg (Color Sat.) Relative Fidelity score (Rf)
UB-DS-24K 2400K 4.4 W/ft /(14W/m) 331 lm/ft (1,087/m) 77 82 Coming Soon Coming Soon
UB-DS-27K 2700k 4.4 W/ft /(14W/m) 344 lm/ft (1,129/m) 78 82 92.6 82.3
UB-DS-30K 3000k 4.4 W/ft /(14W/m) 375 Lm/ft (1,230/m) 85 85 95.5 82.5
UB-DS-42K 4200K 4.4 W/ft /(14W/m) 463 Lm/ft (1,517/m) 94 83 93.4 82.3
UB-DS-62K 6200k 4.4 W/ft /(14W/m) 469 Lm/ft (1,539/m) 107 83 94.7 81


Frequently Asked Questions:

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 passing below 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 over 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: What is the importance of UL Listed?

UL is an acronym for the Underwriters Laboratories. They are an independent product safety certification organization. A good summary used by UL is, "a not-for-profit organization dedicated to public safety." This means you can install these LEDs in commercial spaces, industrial applications, and in your home with peace of mind.

Q: What is the product warranty?

We offer a 5-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: "I am looking for the brightest possible strip lights for my kitchen. I have a kitchen with very little natural light and I am looking to make it so it has enough light to light the kitchen. Would you say that the UltraBright™ Design series will do the trick?" 

The UltraBright™ series are some of the brightest strip lights on the market. The majority of clients use these lights for task and principal lighting. We have used these lights in numerous different locations with great results. Different series of strips within the UltraBright brand like the Architectural, Design, Industrial, and high CRI series will have different applications in your kitchen depending on your requirements. Please contact our design team for further assistance.

Q: Is there an outdoor option?

Yes, we do carry a water resistant Outdoor UltraBright™ Design Series LED strip lights in 30K, 42K and 62K.

Q: How do I mount the lights?

The 3M double sided adhesive that is found on the back of the LED strip allows you to install them in most locations. Be sure to thoroughly clean the surface to remove all dust and particulate matter before mounting the strip. Certain surfaces may require you to take additional measures to secure the strips lights into place. Feel free to call us with any questions.

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 is the maximum run length of the UltraBright™ lights before voltage drop? 

Maximum continuous string of lighting in series: 16ft 5in (5m) Longer connections are possible in parallel with the correct power unit.  What is voltage drop?

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

LED Strip Light Power Usage Calculator 

Q:Wow these are bright! What do I do if I want to dim my LED strip lights?

All LED strip lights are dimmable. The LED strips can be dimmed either through our dimmers [PWM dimming] , or by a Lutron wall dimmer 

To dim the lights you have two options:

  • If you plan to dim your LED strips using a hardwired Lutron wall dimmer, you need a Zurik dimmable driver. This driver itself will be dimmed from the Lutron switch.
  • If you do not plan to dim the lights from a hardwired wall dimmer and want to dim them with one of our dimmers, you will need a non-dimmable LED driver [Mean Well or Flexfire LEDs Brand]


Data Sheets 

Design 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

Product Reviews

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Showing reviews 1-24 of 66 | Next

  1. Great service!

    Posted by Anonymous on 24th Apr 2017

    I really like the products Flexfire carries. The strips are UL listed and have always worked flawlessly with the controls. They make ordering easy and ship out fast.

  2. Wonderful LED light package

    Posted by Anonymous on 14th Mar 2017

    Have bought several strips of led lights for different applications. All worked as advertised. I am very pleased with the results.

  3. LED Strip is great

    Posted by Christopher K. on 30th Jan 2017

    I had no problems soldering the wire to these strips. They do seem heavier duty, a bit stiffer than the other strip I bought at HD(and returned). Love how many LEDs there are per foot, and the fact that I could get 2700K color is awesome!

  4. LED's for my RV

    Posted by Anonymous on 25th Jan 2017

    We have a 2002 RV and I have replaced all the florescent lights with the UltraBright Design Series LED Strip Light. I have found that to I only need one strip of 15 " to replace two 18" florescent tubes. I have more light, a brighter light and my electric draw has gone from 3.5 amps per fixture to 0.5 amps per fixture. With the quick connect wiring installation was a snap.

  5. Under cabinet Lighting

    Posted by Anonymous on 18th Jan 2017

    I bought a couple sample strips of the Ultrabright led strips to determine the color i wanted. I previously purchased the hybrid white lights but they were not as bright as I would like. These are perfect. I settled on the 3000K over the 4200K as i like the warmer light. I have been very happy with the customer support from flexfire. Even though you can find cheaper led strips online these are a higher quality and the tech support makes it worth it.

  6. Under the cabinet UltraBright Design series

    Posted by Gary Dillon on 15th Oct 2016

    I had no experience using LED strip lighting when I remodeled my kitchen. The consultant at FlexFireLeds was a great help selecting the appropriate Series and color of LED strip. My design consisted of two separate lighting areas. The consultant advised my as to what size transformers to use and what dimmer to use. The project was pretty simple to install and worked perfectly the first time. A few tips for installation. Install a switched outlet and the transformer in the top end cabinet and run the wires in the wall behind the cabinet and out under the bottom of the cabinet. I mounted the LES strip about two inches behind the molding at the bottom front of the cabinet for the best work lighting and it worked out great. The series I chose was more than bright enough and the dimmers create a warm ambience at lower light settings. The LED strip really shows off the granite counters. FlexFireLEDS are the all around best.

  7. Great product. Great service.knowledgeable and

    Posted by Timothy Dale on 4th Oct 2016

    Great product. Great service.knowledgeable and helpful staff plus fast free shipping. What more could you want

  8. Incredible under cabinet lighting!!!

    Posted by Brett Kemphues on 3rd Oct 2016

    Purchased the 16ft UltraBright Design Kit in Natural White to use as under cabinet lighting in my kitchen. I was guided to this product by one of the many helpful design experts. They helped me identify what all was needed for my specific install and helped every step along the way. The project turned out great and the new lighting is great and is making the neighbors envious.

  9. Great Product

    Posted by Harry Koharcheck on 29th Sep 2016

    Great product and fast service

  10. Nice natural white light

    Posted by Unknown on 13th May 2016

    First time using LED lights for any projects and found the instructions and product provided by Ollie at Flex-Fire to be of great quality and just what I need to compete my kitchen under counter lighting. I have one more project that needs LED's and will call Flex-Fire when ready to start.

  11. Just awesome

    Posted by Unknown on 14th Apr 2016

    Very bright LED strip , high quality i would buy more for my next project

    Thanks FlexFire Leds

  12. Super bight task lighting

    Posted by Unknown on 7th Feb 2016

    Great product for under cabinet. 10 inch sections work great and are bright enough for food prep work.

  13. Where's my sunglasses

    Posted by Unknown on 24th Jan 2016

    Awesome product. Easy install. Expensive but kind-a worth it for stuff that works

  14. Great quality product

    Posted by Connie on 11th Jan 2016

    David at FlexfireLEDs really helped me choose this light strip. the 4000K-4500K was the perfect white color I was looking for. Easy to install, looks great.

  15. UltraBright LED tape

    Posted by Ralph Mancine on 22nd Dec 2015

    Very bright and 2700K gives warm light for the kitchen. Shows food and backsplash tile$ colors well.
    At full intensity, these run warm. I'm glad we used the aluminum channels because they're good heat sinks and make the whole rig easy to clean with the full-length lenses.

  16. Lots of Light!

    Posted by Mister Dave on 22nd Nov 2015

    Clearly a quality product. Customer service very helpful prior to order so I could use the best components for my project. I am very pleased. I can now use my sewing machine with the room light off if I wanted to do that.

  17. Enclosed Car Hauler

    Posted by Craig on 12th Nov 2015

    I was looking for a lighting solution for my enclosed car hauler. I'm carrying an antique car around and had the following requirements:

    1) Absolutely nothing mounted above the car that might fall and damage it.
    2) Needed bright light to showcase the car while in trailer or maybe to do minor maintenance.
    3) Also needed dim light to run for 8 to 10 hours off a 12v deep cycle battery to minimize need for running gas powered generator.

    I taped these to 1"x1" aluminum angle at the wall/ceiling join. One reel down each side.

    This setup is great! Safe - Bright - Dim and super clean looking.

    Thanks for the tech assistance in system design.

  18. Love these!

    Posted by Lori on 29th Sep 2015

    We're a design/build firm and have tried a couple other strip lights and these by far are the best! Others have issues with the tape adhering and ugly "yellow" lighting where the Flexfire warm white are a nice light and we've not had any issues with them adhering.

  19. Excellent product

    Posted by Theresa on 29th Aug 2015

    I researched strip lighting on the internet to find a quality company and finally settled on Flexfire because of the many good reviews on Houzz. I wasn't sure what I needed so I explained the layout to Daniel and he took it from there. The lighting has been installed for a month now and I couldn't be happier. They are on a dimmer and provide just the perfect accent to my kitchen. Thanks Daniel.

  20. Expanding my use of Flexfire LED's in my condo

    Posted by Unknown on 28th Aug 2015

    I installed Flexfire LED's over a year ago to brighten up the kitchen in our condo that we currently rent out. The have been excellent so I decided to add to the existing lights. I ordered additional LED's using details from my original order.

    I highly recommend FLEXFireLED's for all LED projects based on their high quality products and great customer service.

  21. Best LED Warm White for under kitchen cabinet applications

    Posted by Paul-Burnsville MN on 16th Aug 2015

    Ultrabright Design series warm white...After researching several company's for LED strip lighting I was disappointed with the amount and and quality of light provided until I discovered
    Flexfire. This is a great product that may cost a bit more however offers superior value in comparison to anything else I could find in the marketplace at this time.

  22. Great LEDs

    Posted by Unknown on 13th Aug 2015

    Set them up with a dimmer and they work great for our cave room. Also bought the architect BW lights that are great and are b-r-i-g-h-t. Both are great, the NW Design are a better fit for home lighting.

  23. Design Series bright white

    Posted by Unknown on 26th Jul 2015

    Expectations above what anticipated for the lighting project, very happy.

  24. Beyond Bright

    Posted by paul on 20th Apr 2015

    I've bought a lot of LED strips in my day. The ones I've been buying I thought were really bright until these! Unbelievable how bright. You really need to see it to believe it. They do get warmer than others I used but unbelievable output.

Showing reviews 1-24 of 66 | Next

Specifications for this Hybrid LED light kit

Product Hybrid Bright White/Warm White LED Strip Light
Color Temperature 2900K for Warm White and 6500K for Bright White
Lumen (Brightness) 3450 Lumens per reel
Quantity per unit You will receive a continuous 16ft section of lights
UL Listed? Yes UL Listed, Must be used with class 2 power transformer
Working Voltage 12v DC
Dimmability Fully Dimmable
Beam Angle 120 Degrees
Rigid or Flexible?

-Flexible installation up to 90 degrees. Used on curved surfaces

Power consumption 2.92 watts per foot
UV emission No
LED Count per reel 600 LEDs

2 years

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