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Product Overview:
  • High light output
  • Low energy consumption
  • Ultra-slim profile
  • Brushed steel finish
  • Linkable
  • Product video
  • LED driver required - sold separately
  • Learn More

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LED Ruler Very Thin Light Bars

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LED Ruler Very Thin Light Bars

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Only 2 of each size left in stock.

About our LED Ruler Very Thin Light Bars

This highly efficient LED light bar, in an attractive brushed steel finish, delivers bright, warm white light. It comes complete with mounting clips, screws and a connector so that multiple fixtures may be linked together easily. Choose from three models to complete your lighting project with a long-lasting, cool-operating LED fixture.


  • 2 Energy Efficient Models:
    10-7/8in long 18-3/8in long
    3 LEDs 5 LEDs
    3.75 watts 6.25 watts
  • Finish: durable and attractive brushed steel finish
  • Ultra-Slim Profile: only 9/32in high and 15/16in wide
  • Lightweight Construction: heavy-gauge, extruded aluminum with plastic molex end sockets
  • Diffuser: clear silicone LED cover
  • Included with Fixture: each LED Very Thin Light Bar includes two clear mounting clips with screws and an inline connector for linking 2 fixtures together


  • LEDs: high power bright white LEDs (1.25 watts each)
  • Color Temperature: 3100K (warm white)
  • Good Color Rendering: 85 CRI
  • Very Good Rated Life: 60,000 hour rated life on average
  • Cool Operation: gives off very little heat


  • Dimmable: yes, when powered by dimmable LED driver.
  • Linkable: the light bars may be easily linked together using inline connectors or flexible connectors.
  • In-Line Connector Included: one inline connector is supplied with each LED Very Thin Light Bar for end-to-end linking


  • All of these Accessories are ordered separately.
  • Power Supply: one 350 mA constant current LED driver is required for each continuous run of LED Very Thin Light Bars. [Caution: Be sure that the total wattage of all of the LED Very Thin Light Bars in a single continuous run does not exceed the wattage of the constant current LED driver used to power that run. Also, be sure that the LED Light Bars and the constant current LED driver are connected in series with each other not in parallel.]
  • Power Connector: a Power Connector is required for each run of LED Very Thin Light Bars. The Power Connector includes an attached pin connector to connect to the first light bar in a run, an 8ft black lead wire, and an end cap for the last Light Bar in the run.


  • Easy to Install: please refer to these Installation Instructions (PDF). Always check local electrical codes and the National Electrical Code (NEC) before installing any lighting products. It is also wise to consult with a licensed electrician in your geographical area about any electrical details that you might have questions about and to make certain that you are satisfying all of the appropriate electrical codes.
  • Optional Flexible Connectors: available for connecting LED Very Thin Light Bars together over short distances. Available in 3 lengths: 6in, 12in, or 36in with a black cord.
  • Large Quantity Discount: If you would like us to quote on a large quantity of LED Very Thin Light Bars, please call us at our toll-free number or use the online Quotation Request for Large Quantities form. We are always happy to provide you with our best large quantity pricing.

    1-Year Warranty  Satisfaction Gaurantee  Quick Ship Item Installation Difficulty

Specifications & Measurements

When determining how many LED Very Thin Under Cabinet Lights and which size you will need for under cabinet lighting you first will have to measure the space where the fixtures will be attached. To do this you should NOT measure the face of the cabinets; you should measure the "cavity" under the cabinet where the fixtures will actually be placed. Remember to leave 1in clearance at both ends to plug in power supply cord, connector(s) or end cap. We recommend that you "fill up" the cavity space with as many fixtures that can fit.

of LEDs
Total Wattage
of LEDs
8in - 11-1/2in 2 2.50
11-5/8in - 15-1/4in 3 3.75
15-3/8in - 19in 4 5.00
19-1/8in - 22-3/4in 5 6.25
22-7/8in - 26-1/2in 6 7.50
26-5/8in - 30-1/4in 7 8.75
30-3/8in - 34in 8 10.00
34-1/8in - 37-3/4in 9 11.25
37-7/8in - 41-1/2in 10 12.50
41-5/8in - 45-1/4in 11 13.75
45-3/8in - 49in 12 15.00
49-1/8in - 52-3/4in 13 16.25
52-7/8in - 56-1/2in 14 17.50

This image shows various installations of the light bars.

This image shows the dimensions of the light bars.

The light bars may be easily linked together using inline connectors.

Foot-Candle Chart

Footcandle Chart for LED Very Thin Light Bars

Product Reviews
LED Ruler Very Thin Light Bars
5 Stars based on 2 Review(s)
Colfax, CA
5 Stars
I would recommend this item to a friend.

Perfect solution for under cabinet lighting
October 8, 2013
We had these light bars installed during our kitchen remodel summer 2012. Our contractor was very impressed with them. We have enjoyed them very much over the past year; they have more than exceeded our high expectations.
Unobtrusive; provides very good light.
Kind of expensive.

Painted Post NY
5 Stars
I would recommend this item to a friend.

Great product!
July 26, 2013
I needed something inconspicuous for my under cabinet lighting, as the cabinet bottoms were not recessed up into the cabinet. These are perfect. They are thin enough not to be seen when I'm standing. When I'm seated and can see them, they're attractive and stylish. The LED lighting is bright, but not overwhelming. I'm very happy with my purchase. My very particular contractor thinks they're awesome.
Thin, very attractive design compared to the rope lighting

Questions & Answers
By Ragets from Palm Springs, CA on May 8, 2014
This looks like what we need, but I have a question. 4 different areas of lighting under cabinets. All are on the same switch currently and wired as 3 way. Question 1 - do we need a driver for each of the 4 areas? Do the drivers connect to the 110? Will one dimmer work for all? Lengths would be 2 at 18 inches, and 2 at 8 feet. Will I need special light switches, or just LED 3 way dimming lighting? Thanks
By Jacob from Pegasus Lighting on May 8, 2014

Since you are planning on dimming the fixtures, you need to use the compatible 15W dimmable driver listed in the accessories. If your run exceeds 15W than you will need to use more than one driver.

You do not necessarily need to use a driver for all 4 areas. You can use flexible connectors to link the Rulers together across "jumps" in the kitchen.

The driver connects to line voltage. So the answer to your second question is "Yes".

Yes, you can use one dimmer. We recommend using a CFL-LED dimmer since it has a low end adjustment dial to compensate for the low wattage in this type of system.
By Tom from Ogden, UT on May 8, 2014

Standard disclaimer that, while I know a bit about wiring, I am not a licensed electrician.

We installed our lights under five different cabinet sets, the middle two separated by a sink, so distance shouldn't be an issue. Pegasus sells connecting cables up to 36". What is an issue is the total number of LED bulbs per circuit, the size of your LED drivers, and whether you purchase the "dimmable" drivers.

If you purchase the drivers through Pegasus, you have a choice of 8W, 12W, 15W constant current drivers and a 15W dimmable driver. Each LED bulb (not the entire ruler but each bulb) uses 1.25 W. So you could only put 6 total LED bulbs on the 8W driver. If you purchase the 15W dimmer driver (costs more, but if you want to dim the lights you MUST get the correct driver) you can hook up to 12 bulbs (1.25 x 12 = 15W). This is what determines the total number of drivers...that and whether you can get the wire from the driver to the furthest LED bar.

If you install more than one circuit due to wattage issues, you'll need one driver for each circuit. The drivers hook up to 120V/60hz house current (wiring sold separately) Go to the hardware store and, if you're using the constant current drivers, ask for "doorbell" wire...16 gauge. Not sure what gauge to use for the dimmer will be in the directions.

One power switch can provide power for all your drivers. I didn't install the dimmable version so am not sure about double-ganging the drivers onto a single dimmer switch. It can probably be done but you may have to down-rate the total amperage going through the switch. This is a question the folks at your local electric store can answer for you (recommend a no-kidding electrical store and not the guy in the apron at the box store).

If you haven't purchased the product yet you can print off the particulars and take them to your neighborhood electrician store. If you have purchased the product just take the directions to the store. You've got to buy the wire anyway, so they'll be happy to answer your questions for you. A diagram of what you're trying to do, with realistic dimensions, helps them give you the best advice.

Bottom Line: We love our LED rulers...when we remodel the main kitchen this summer we'll be installing them again. Good luck.

PS: Hint...when you get all your rulers, test them before installing them. I made a field-expedient tester with an old extension cord, using this as a power source for the driver (again, if you're not comfortable around electricity get a professional to help). I tested each ruler and found one bad 3-light section, which Pegasus replaced for me (great customer service). This saved me a lot of time and effort.

By Glenn from Cape Cod on March 4, 2013
I would like to use this product in a valance above a long mirror. Can I get a twelve foot unit?
By Jacob from Pegasus Lighting on March 4, 2013


The longest model available is 18-3/8in. You could like together several models with the included in-line connectors to reach your 12ft length.

By Peter from New York, NY on August 10, 2012
I need to connect 10 7/8 + 18 3/8 + 18 3/8 + 14 5/8 of very thin light bars in one line from one switch.
What kind and how many drivers and connectors do I need?
By Jacob from Pegasus Lighting on August 10, 2012


To calculate the driver needed, we simply add the wattage of each fixture. Here are the fixtures you list:
PRULER-3 (10-7/8in) - 3.75 watts
PRULER-5 (18-3/8in) - 6.25 watts
PRULER-5 (18-3/8in) - 6.25 watts
PRULER-4 (14-5/8in) - 5 watts
Total = 21.25 watts

With this many fixtures, you are going to need 2 drivers. I would recommend (2) 12W drivers. You will also need (2) Power Connectors. (Both are available on Accessories tab).

The fixtures include inline connectors, which allow for the fixtures to link directly to each other. If you need to link across a short distance, then I would recommend flexible connectors.

By Scott from Deerfield, IL on August 10, 2012

Those 4 fixtures together require more power than 1 driver can supply. I would recommend 2-12w drivers (1 for the 10 7/8" and one 18 3/8", the other driver for the other 18 3/8" and the 14 5/8".) Both drivers can be fed from the same 120v circuit. Switching can be achieved by connecting the driver feed (120v) to your light switch. When I installed my lights, I installed 3 drivers and switched them on one wall switch. I hope this answers your question.

By Mary Tim from Yeadon, PA on June 9, 2014
Can I use this product over a stove? I have an older house with a really nice stove hood that exhausts to the outdoors. However it does not have a light of any sort. If I can't use this product for some reason is there something else you can recommend?
By Jacob from Pegasus Lighting on June 10, 2014

Mary, I would not recommend this product because it's not suitable for damp locations.

Here's a similar product that can be used in damp locations -
By Clive from Tampa, FL. on June 10, 2014

For your particular application it depends on the distance from the top of the rear burners and the location of the strip on the back wall under the canopy and the volume of air flow when the stove is on. However the end caps and the light emitting diode are encased in plastic and I assume that the innards of the strip are also plastic. You could test the temperature by taping a candy thermometer to the wall at the intended location of the light bar, take a reading with three of the burners at full temperature with the exhaust fan on low. Check the reading against the specs of the light bar or call the manufacture with the info. I believe that gas burners will give of significantly more heat than electric

If possible I would place the light strip(s) on the inside edge at the front of the exhaust and possible down each side of the canopy to give you better light coverage on the stove top.

By Matt from Glen Rock, Pennsylvania on December 26, 2012
I need to connect 14 5/8 + 14 5/8 + 18 3/8 + 18 3/8 of very thin light bars in one line from one switch. On the other side of my kitchen I need to connect 14 5/8 + 14 5/8 + 18 3/8 to another switch.

What kind and how many drivers and connectors do I need?
By Ila from Pegasus Lighting on December 28, 2012


For the first set of 14 5/8 + 14 5/8 + 18 3/8 + 18 3/8...
Since the total wattage is 22.50, it will be necessary to use two drivers, (1) PLED-DR12-350 ( for the two 14-5/8in & (1) PLED-DR18-350 ( for the two 18-3/8. Generally both drivers can be controlled by one switch.
Will also need (2) Power Connectors PRULER-CONKIT.
(2) Flexible Connectors choice of 6, 12 or 36in.

For the second set - 14 5/8 + 14 5/8 + 18 3/8, Total wattage of 16.25, (1) PLED-DR18-350 Driver can be used + (1) Power Connector (PRULER-CONKIT) + (2) Flexible Connectors, 6, 12 or 36in.

By Rick from Orillia, Ontario on April 2, 2013
I would like to replace a light already wired in with 2 of your power supplies and then run generic wire through the cupboards to the various light strips. Are connectors available to hook to wire?
By Jacob from Pegasus Lighting on April 2, 2013


The light bars connect to the hardwire drivers using a power connector accessory (available on the Accessories tab).

Then, the drivers connect to line voltage using household wire. Most of the drivers have built in terminal blocks for making this connection.

By Heather from Waterbury, CT on August 12, 2013
Can these light bars also be used effectively for on top of upper cabinets to light above the cabinets area, or are they only good for under mount uses?
By Jacob from Pegasus Lighting on August 13, 2013

Yes, they can be used for over cabinet lighting.

By Mark from Greenwich Ct 06830 on April 10, 2013
I would like to install these fixtures but we have installed #14-2 Romex wire to each cabinet location. Can we remote the drivers and will these lights work with a standard magnetic transformer like some LED fixtures do?
By Jacob from Pegasus Lighting on April 11, 2013


Take a look at the Accessories tab for compatible hardwire drivers that you can remote wire.

I would not recommend using a magnetic transformer because these LEDs need constant current supplied NOT constant voltage.

By CHRIS RAFFETTO from LOS ANGELES, CA on September 20, 2012
Is this available in cool white?
By Jacob from Pegasus Lighting on September 20, 2012


This item is available in 3100K (warm white) only.

By Chuck from Toledo, OH on April 20, 2013
Is this unit a direct wire or plug in?
By Chris at Pegasus Lighting on April 22, 2013

These lights require an LED driver power supply that is ordered separately on the Accessories tab. Each of the LED drivers compatible with this product are hardwire. Thus, I guess you could say that the unit is direct wire. In addition, you will also need to purchase a power connector to connect the LED light bar to the LED driver.

By neal s. fogelhut from encinitas, ca 92024 on April 1, 2014
we are in the process of remodel of our kitchen and want under cabinet lighting. Would this type of lighting be the type we should be looking for. What are the total amount of hardware per light needed as well.
By Jacob from Pegasus Lighting on April 1, 2014

Neal, this is an excellent product for under cabinet lighting.

In addition to the light fixtures, you will need a driver, power connector, and flexible connectors for linking the fixtures together. All of these items are available in the Accessories section on the right hand side of the page.
By Rick from Raleigh, NC on April 1, 2014

As part of my kitchen remodel, I installed under cabinet LED lighting as well. My lights were hardwired (not plugged in) and all lights were controlled from one LED compatible dimmer switch. I chose the ruler lights to use under a floating shelf that was between two cabinets. I used another brand of LED lighting under the cabinets. The ruler lights were recessed under the bottom of the shelf in a groove so that they were not visible when looking at the shelf straight on. The primary reasons I chose the ruler lights: a. they are very thin and easy to conceal,
b. they operate with a dimmable LED driver, c. the output light temperature (3100K) closely matched the other LED under cabinet lights I was using, d. they can be hardwired in. You will need the ruler lights, a corresponding dimmable LED driver ( which must be hidden inside of a cabinet), a metal box to place the driver in for safety, connection wire from driver to the lights, and a short connection wire to connect the lights together. If you are connecting the lights end to end, then a solid connector is provided with the lights. The ruler lights are very bright on full and can be dimmed down to off. I have not noticed them flickering like you see with other LED under cabinet lights. The lights stay cool to the touch; the LED driver gets a little warm. However, not hot like halogen under cabinet lights. If you are using a dimmer switch to control these or any LED lights, make sure it is compatible. Not all dimmer switches are. I believe mine was a Lutron Diva for LED. You are limited on the number of ruler lights that can be connected to a single driver. There is no on/off switch, so you must have these connected to a wall switch. I am very happy with these lights. Good luck.

By Amy from New York City on January 24, 2013
Hi, I'd like to get 2 of the 18 3/8 inch bars for under cabinet hard wired installation. I will be connecting them. I have no idea which driver would be appropriate. 8, 12 or 15? Also, in the installation example drawings I"m seeing the driver exposed under the cabinet near the light bars. Could I put the driver in the cabinet itself and feed the wire through a hole in the bottom of the cabinet? Let me know thanks,

By Jacob from Pegasus Lighting on January 25, 2013


For two 18-3/8in fixtures, you will need a driver rated for more than 12.5 watts, so I would recommend either the 15W driver or the 18W driver.

You can place the driver in the cabinet but it would be wise to check with an electrician to make sure you aren't violating any local electrical codes.

By Catherine Fallis from on October 9, 2012
Is this 120v?

By Jacob from Pegasus Lighting on October 9, 2012


The drivers that are required for connecting these lights to power are rated for 100 - 240 Volts.
By Rod from Maryland on October 9, 2012

Yes, 120 volts A/C is the input.
Output however is 2.8 - 28 volts D/C 350ma.
The variation on output voltage indicates minimum volts for small light strips - up to 28 volts for a sequence of more light strips.

By Sergio from Seattle, WA on December 27, 2013
I would like to connect 2 18" strips and have a hard wire routed to the location that is not connected to a light switch. Are there any 15W or more drivers with built in light switches, or do you have any other suggestions?
By Jacob from Pegasus Lighting on December 29, 2013


We do not have any 15W drivers with a built in light switch for this product.

We have similar products that have accessories that allow for switching when a wall switch is available. I would recommend this item -

You can use this accessory in conjunction with a driver to switch the lights on/off -

By Lane from Denver on October 18, 2012
Is this product approved for closet installation?
By Jacob from Pegasus Lighting on October 18, 2012


Yes, the light bars will work well in a closet application.
By Todd from Minneapolis on October 18, 2012

I purchased these VTLB for a closet but had to return because the power supplies are not up to code for install In the state of Minnesota. They must be enclosed to hide the exposed live household wires, however they are not approved for such enclosed use. Kind of a catch-22. Had to go with another more bulky LED with built in power supply, too bad because the VTLB LED bars themselves were pretty slick.

By Allan Small from Ashburnham, MA on February 12, 2013
I want to install one 18-3/8" light bar with a Pruler power connector, and I'd like it to be dimmable. Since this will be under 7 watts, can I use the 9-Watt 140mA Dimmable Electronic Plug-In Constant Current LED Driver with it - or am I obliged to use the 15 Watt 350 mA dimmable driver?
By Jacob from Pegasus Lighting on February 13, 2013


The 9W 140mA plug-in driver will NOT work with these fixtures.

The PRuler requires a 350mA constant current driver.

If you want to dim your installation, then you will need to use the 15W 350mA driver.

By Gary from Rochester, NY on January 21, 2014
If I have one run on one switch with more than 18 watts total so I need two power drivers, where do the power drivers connect - to each other and then to the first Ruler strip?
By Jacob from Pegasus Lighting on January 22, 2014


The drivers connect to line voltage from your home. They do not connect to each other.

Then, the driver connects to the first light bar in the run.

For more than 18W, you will need to have separate runs.

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