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Product Overview:
  • Very low profile
  • Cool white bulb
  • Linkable
  • 2-Wire non-grounded
  • Energy-efficient ballast
  • Easy to install
  • Learn More

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Microfluorescent T5 Low-Profile Light Fixtures

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Microfluorescent T5 Low-Profile Light Fixtures

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About our Microfluorescent T5 Low-Profile Light Fixtures

Low-profile microfluorescent T5 fixtures use energy-efficient, silent, instant-on electronic ballasts and come complete with fluorescent cool white lamp, mounting clips and screws, direct connector, and cord and plug. These are very easy to install, can be linked together, and are extremely versatile fixtures that can be used in both residential and commercial applications - backlighting, cabinet lighting, cove lighting, desk lighting, display case lighting, exhibits, indirect lighting, merchandising, over cabinet lighting, shelf lights, showcase lighting, task lighting, trade show lighting, and under cabinet lighting.


  • 6 Models:

      8 watts 13 watts 18 watts 21 watts 24 watts 28 watts
    Model # PNULS-8 PNULS-13 PNULS-18 PNULS-21 PNULS-24 PNULS-28
    Length without power cord 13.5in 22.5in 25-1/8in 35.5in 37.25in 47in
    Length with power cord 15.5in 24.5in 27in 37.5in 39in 49in
  • Very Low Profile: only 7/8in wide by 1-11/16in high
  • Very Little Heat: gives off very little heat
  • Complete Unit: each T5 Low-Profile Fluorescent Fixture made of polycarbonate comes with a T5 cool white fluorescent lamp, an attractive, easy-to-clean, ribbed, acrylic cover that protects the T5 fluorescent lamp, a rocker switch pre-installed on the fixture, a direct connector, and a 6ft cord-and-plug with a two-prong polarized plug


  • Light Bulb Included: T5 (5/8in diameter) fluorescent light bulb with a color temperature of 4100K (cool white) is included with each fixture
  • Very Good Lamp Life: rated life is 20,000 hours on average (Lamp is easily replaced.)
    Caution: always be certain that the lamp is seated properly in both of its sockets. Be sure that both pins of each end are inside their respective socket and that the lamp is rotated 90 degrees once the pins are in the sockets. Failure to make good electrical contact between the pins and its socket may result in arcing and excessive heating of the socket.
  • End of Lamp Life: when a fluorescent light bulb burns out it is always a good idea to turn off the corresponding Microfluorescent fixture. Otherwise, the solid state ballast used inside that fixture can sometimes burn out while trying to start a bad light bulb.


  • Quiet Electronic Ballast: built-in lightweight electronic ballast provides instant-on starting with no flickering and cool quiet operation
  • Energy-Efficient: uses only 8, 13, 18, 21, 24, 28 watts of power/fixture respectively
  • Linkable: as many as 10 T5 units may be linked together in one continuous line using Direct Connectors or Flexible Connectors of 6in, 12in, or 18in. If the distance between two T5 Low-Profile Fixtures is greater than 18 inches, then use two or more Flexible Connectors. For example, if the distance between two T5 Low-Profile Fixtures is 25 inches, use two 18in Flexible Connectors connected end-to-end. (NOTE: Each T5 Low-Profile Light Fixture normally comes with an "end cap" on one end. This end cap must be removed before the fixture can be linked to a second fixture.)
  • Rocker Switch Pre-Installed: all of the fixtures come equipped with a small rocker switch on the side of the fixture. When the Fluorescent T5 Low-Profile Fixtures are linked together one or more of the fixtures may be turned off by using the rocker switch without affecting the other fixtures.
  • 2-Wire Non-Grounded: 2-wire non-grounded fixtures like these Microfluorescent T5 Low-Profile Light Fixtures can be used for residential installations; on the other hand, 3-wire grounded microfluorescent fixtures are strongly recommenced for projects that require grounding - especially commercial installations
  • Not Dimmable: these fluorescent fixtures are not dimmable


  • 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.
  • Plug-In Electrical Connection: unit is supplied with a 6ft cord-and-plug adapter with a two-prong polarized plug. These Microfluorescent T5 Low-Profile Light Fixtures cannot be hardwired directly; their profile is simply too small.


  • Flexible Connectors: Optional, used to link 2 or more T5 fixtures together
  • Direct Connectors: Optional, used to link 2 or more T5 fixtures together end-to-end
  • T5 Cool White Fluorescent Light Bulbs: Optional, additional spare lamps are recommended


  • Large Quantity Discount: If you would like us to quote on a large quantity of Microfluorescent T5 Low-Profile Light Fixtures, 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.

    ETL Listed  1-Year Warranty  Satisfaction Gaurantee  Quick Ship Item  Installation Difficulty

Specifications & Measurements

When determining how many Microfluorescent T5 Low-Profile Light Fixtures and which size you will need for under cabinet lighting you first have to measure the space where the fixtures will be attached. To do this you should NOT measure the face of the cabinets; you must measure the "cavity" under the cabinet where the fixtures will actually be placed. We recommend that you "fill up" the cavity space with as many fixtures that can fit. For example, for a space that measures 28 inches we recommend that you use the fixture that measures 25-1/8in, NOT the one that measures 22.5in. This will ensure that the countertop below will be uniformly lit.

Cavity Measurement Microfluorescent T5 Low-Profile Light Fixtures   Cavity Measurement Microfluorescent T5 Low-Profile Light Fixtures
15.5in - 24in PNULS-8 40in - 49in PNULS-24
25in - 27in PNULS-13 50in + PNULS-28
28in - 37in PNULS-18    
38in - 39in PNULS-21    
NOTE: These dimensions assume that the power cord sticks out approximately 2.0in from the fixture.

Product Reviews
Microfluorescent T5 Low-Profile Light Fixtures
4.5 Stars based on 35 Review(s)
Memphis, TN
5 Stars
I would recommend this item to a friend.

September 20, 2014
Quality build, nice bright light, easy installation under cabinet. The fixtures we replaced were plastic framed and were rotting after only two or three years - right where it mounted to the cabinet. One just fell off. These fixtures are made of metal, T5 bulbs are efficient and bright. Switch is on the fixture, if you need one.
Quality construction and bright white light. Perfect for over the stove or sink.

Billings, MT
5 Stars
I would recommend this item to a friend.

Only Pegasus had what I was looking for (I checked around hard) And at a great price!
April 13, 2014
I was seeking a replacement for a simple design compact slim profile 13" fluorescent light (-GE) that upon returning from away I found wouldn't light! Thinking it was just a bulb problem I bought one spare for but to no avail. Turned out the fixture was bad and all I could do was replace it! Nobody else offered such but finally the Lord led me to Pegasus. The light is perfect for its need. Most affordable. This light will literally illuminate the yard too through the window in which the old one hung! So for $21 (with shipping) I have a perfect solution to the whole problem. I don't have to return the spare bulbs. Nor settle for dark MN! And all thanks to God and Pegasus because nobody else offered anything comparable let alone as nice. I am very very satisfied (couldn't be more)!

Denton, Texas
5 Stars
I would recommend this item to a friend.

Five Star Satisfaction
November 9, 2012
We're impressed with the sturdiness and quality of this light fixture, and have purchased an additional one to give to a relative. It illuminates the counter top area under it very brightly, and is quiet in operation. Its low profile allows it to be totally hidden under modern kitchen cabinetry. Parts were provided for several different approaches to mounting.

Big Steve
Seymour, TX (by gawd)
5 Stars
I would recommend this item to a friend.

Great Lights; but the Power Cords do not Match the Pegasus light I bought at one of the Big Box Outlets
September 18, 2015
I have a long workroom with a low ceiling. I bought a three-foot Pegasus model at a Big Box store because it was low profile. It threw off good light; so I decided to buy more. I live quite a long way from anything close to a city; so I searched the Internet and found this site. I ordered two four-foot models and connecting cords. The three-footer I got from the Big Box included a connecting cord and the small connecting piece, and of course, the power cord. The ones here do not include the connecting cord, but they do have the small connecting piece -- which they will also sell you if you don't know you will get it for free in the package. To my surprise, the connecting pieces and the cords are not identical and cannot be connected. For my usage, this isn't a killer problem, but I did expect to connect all three together. What I will do instead is put the two new four-footers in my workroom, and I will put the three-footer in another room. Then I will order a third four-footer and possibly a fourth. I like the lights. The three-footer has been installed less than a year, but more than six months, and it has never so much as flickered. The only trouble is that if I decide to order more in a few years, I will be wary of ordering because of the connections. I would hate to have a third style of connectors show up on my doorstep.
Merchant Response:
Pegasus Lighting is not a manufacturer of light fixtures. Thus, there is no "Pegasus" light fixture that is sold in a Big Box store. The light fixtures that were purchased in the Big Box store and the ones that were purchased on our site must not be the same fixture since the connectors do not match.
Very bright. Very low profile. Works every time with instant start.
None -- except if you expect to connect a Pegasus from a Big Box with a Pegasus from this site. For the record, I bought the first light less than a year ago from one of the two (in Texas) Big Box stores in Wichita Falls. Since you may be reading this years from now, I purchased the first one around January of 2015, and I bought the two four-foot lights from this site in September 2015. I would have ordered more from the Big Box, but I could not find them online, and the trip is too long just to see if they have them stocked. Thus, I ordered here. Unless you are trying to mix Pegasus lights from a Big Box and from this site somewhere around 2015, I would really doubt that you will have my situation.

Roger Owsiany
Kalamazoo, Michigan
5 Stars
I would recommend this item to a friend.

Replacement Lighting for Die Cast Car Collection
July 27, 2015
I ordered this lighting for a replacement light supply for my die cast car collection in my garage. The light was received earlier than I expected, and was packaged excellent. Overall my experience with this product and the company is great. I plan on ordering two smaller in length tomorrow. Very Pleased with results.

3 Stars

Cheap Brackets
April 14, 2015
The light is fine but the clip on brackets were brittle (2 of 6 broke). It was a good thing they came with an alternative mounting system although not nearly as easy to install as the clip on system. Also, it was not clear that a linking cable was an additional item. I made due with a quick trip to ace hardware for a connector. Even with the hardware store trip I still came out with a reasonably priced light albeit with a minor headache.
see above comment
see above comment

Sacramento, CA
5 Stars
I would recommend this item to a friend.

February 3, 2015
These were just the correct size in a wall unit for display.
Ease of installing and connecting multiple units in separate joining units.

Johnstown, PA
5 Stars
I would recommend this item to a friend.

Great Microfluorescent Lights
November 4, 2014
I bought two of these. When they arrived, I was very pleased. Very slim design, easy to install and gave off great light. I connected these two lights with the Flexible Connector. Can hardly see the lights under the cabinet, another great option. I would highly recommend these to anyone. I don't have access to take pictures at this time, but if anyone would like to see them, I can send them pictures of my installations.
see above
NONE whatsoever.

Baltimore, MC
5 Stars
I would recommend this item to a friend.

Low profile - plenty of light
November 1, 2014
Easy to install. No transformer buzz. Great product.

John Bammel
Naples, FL
5 Stars
I would recommend this item to a friend.

July 12, 2014
Easy to install. Works well. Fast delivery and knowledgeable resource people.
See above

Questions & Answers
By Tom from Bellingham, WA on February 25, 2013
Are the ballasts replaceable on these units?
By Jacob from Pegasus Lighting on February 26, 2013

Tom - the short answer is no. Basically the fixtures are too small to replace the ballast.

By Malcolm Jensen from Bairnsdale Victoria Australia on June 19, 2013
I have a microfluorescent 28 watt T5 low-profile light fixture and want to change the lamp but am having trouble removing the diffuser without damaging the fixture. Would you please inform me on the correct way to remove the diffuser? Many thanks and I hope that you are able to assist me with this problem.
By Jacob from Pegasus Lighting on June 20, 2013


The diffuser should remove easily by simply grasping the base of it and pulling it upward. You may need to use your finger nail under the edge but it should be easy to remove.

By Terry from Albany, NY on February 28, 2013
I'd like to create a lighted panel to back light a vintage Mobil Gas sign lens (about 5' in diameter). I don't have a lot of clearance. Is it possible to mount the fixture on its side?
By John from Los Angeles, CA on February 28, 2013

We have been using the T5 low profile light strip for over a year. It is on a shelf overlooking hard to read DVDs in an old armoire housing a TV. It has made the use of a flashlight a thing of the past. T.Y.
By Penny Anderson from Regina, Saskatchewan on February 28, 2013

Yes Terry it would work as it mounts on the side. I use my lights for under cabinet lighting.
By Deborah from Santa Clarita, CA on March 1, 2013

The mounting brackets are made for the backside of the light and are not wide enough for the sides. I have mine laying on it's side on a shelving unit, and it is fine. If you go to the hardware store, I am sure you can find something to work for a side mounting. I would check with the manufacturer if you are using it outside. It does not have. grounded plug.

By Tim from Michigan on October 23, 2013
What size bulb does the 13w 22.5" fixture take? Size in inches.
By Jacob from Pegasus Lighting on October 24, 2013

It takes the 13W 21in T5 -

By Deer from San Antonio, TX on August 4, 2012
Which item# do I order if I have 22" 2-prong T5 13 watt bulbs (22" includes the prongs)?
By Jacob from Pegasus Lighting on August 6, 2012

Thanks for your question.

The PNULS-13 uses the 13W light bulbs.

By Tracy from Illinois on February 5, 2015
How many Amps? I'm looking at the 25" option.
By J.K. from Beaverdam, VA on February 6, 2015

About .175 amps at 120VAC.
By Giao from San Jose, CA on February 6, 2015

The fixture fits 18W lamp with 120V input voltage. It comes out about 0.15A.

By Julie from Slingerlands, NY on August 23, 2012
My showcase is glass & metal. I cant drill in it to mount it. Is there another way to mount the light in
the showcase? Perhaps adhesive?

By Ryan from Costa Mesa, CA on August 23, 2012

I have used VHB and it works pretty well. The key to VHB is that you have to push really hard to start the adhesive process. Many people just put it on and barely push and this does not engage the adhesive fully.
By Matt from Costa Mesa, CA on August 23, 2012

Use the grey 3M adhesive exterior tape. You can purchase it from your local Home Depot.
By Mark from Raleigh on August 23, 2012

We used industrial velcro to mount this fixture under the ledge of a desk.
By ray from on August 23, 2012

The light fixtures are pretty light. A good double sided tape should hold them up.
By Barbara from Kansas on August 23, 2012

3M VHB tape will work great. Product #4930
By Annie from Chapel Hill, North Carolina on August 23, 2012

I ordered this fixture to use as a desk light. I mounted it under some shelving with screws. While I can't speak from personal experience about using adhesive, the fixture itself is not heavy at all, so I wouldn't be surprised if a few adhesive strips would hold it steady (the top is flat - perfect for sticking things). Plus the light doesn't generate that much heat (compared to an incandescent or halogen), so temperature wouldn't be a problem for the adhesive as much. Overall, this light has functioned perfectly for me - crisp white light and no glare on my computer screen!!!
By Joseph from Medford, Ma. on August 24, 2012

Yes. Use clear silicone caulking. It has strong holding power when dried.

By Uli from Estero, Florida on December 15, 2012
Bought T5 28 watts 47" long. How can I change the lamps? Regularly you twist them until the pins are straight upright and take them out. This model has a plastic ring there and I could not get the lamps out of the fixture.
Anybody help?

By Mike Bennett from Macedon, NY on August 3, 2013
I have 3/4 inch deep space below cabinets. I don't want the bulbs to show or at least minimize the view. Can these be mounted flush against the bottom of the cabinet with thinnest profile used? If not can you suggest better option, Electrical outlets are limited and LED drivers seem too expensive to have installed to direct power. Thanks in advance. Mike
By Pegasus Lighting on August 5, 2013

Yes, these can be mounted flush against the cabinets. However, the thickness will be 7/8in, so it will be visible below your 0.75in lip. Note that these are some of our lowest profile fixtures.
By Greg from Enfield CT on August 5, 2013

Unfortunately the 3/4" limitation will drive you in a different direction. I had a similar situation with available space. We ended up going with LEDs which had a much lower profile and last much longer than these T5 lamps.
By B Amin from Bolingbrook IL on August 5, 2013

Short Answer is "yes". Even after installing flush against at the bottom of the cabinet, you may see the fixture at a distance. Not if you are standing at your countertop doing your "counter top" stuff, then you will not see the fixture. Also,you might want to install the fixture at the bottom of cabinet right at the front(i.e. right behind cabinet's front facing frame). Although this type of installation is a bit awkward and difficult but the end results are beautiful and you will not see the fixture and glow of the light will gently fall on your task.
By Deborah from Santa Clarita, CA on August 5, 2013

It might be tight as you would have to lay them on their side. They are exactly 3/4" . The brackets will not work in this scenario, so you would have to find an alternative way of mounting them. If you use mounting tape, it will put you over the 3/4" depth under the cabinet. Having said that, they are a fantastic light source for what you are describing.
By Jack from Martinsville, IN on August 6, 2013

3/4" is pushing it but I got around this by moving lights back about 2-3 Inches and stapling aluminum foil under the lamps to bottom of cabinet to increase light output and increase area covered by lamp laying on it's side.
Looks and works great. In fact I had another brand installed on other cabinets and placed foil under them with the same results. Brighter output and better distribution of light.

By Jim from Montana on April 15, 2013
It says two wire non grounded. These are direct wire fixtures? Do they connect right to left or left to right or both? At which end can the wires come right or left?

By Jacob from Pegasus Lighting on April 16, 2013

Jim, these are NOT direct wire fixtures. The fixture's profile is too small to be wired directly. They can only be plugged in.

By Tony from Cranford, NJ on September 11, 2013
So, when say 3 fixtures are attached to one another, if I leave 2 with the rocker switch in the on position and the 3rd which will have power cord going to outlet, can I just use the one rocker switch to turn all 3 on and off at once.
By Jacob from Pegasus Lighting on September 11, 2013


No, that will not work. Each individual rocker switch controls each individual fixture, even when linked together.

The two lights that are On will be On no matter what the switch position is for the first fixture.

By Brock Landers from Strongsville,Ohio on December 24, 2013
I will be building a new house and for the kitchen I will need 3 PNULS-28s & 3 PNULS-8s as I have 3 locations that will need one of each wired together.I also have a 4th location that will need 1 PNULS -24. Can these all be wired together so they come on with one external wall switch? If not what would you suggest?
By Andy from Seaford, DE on December 26, 2013

We use them in an application where 6 lights are daisy-chained together into one receptacle and have that receptacle controlled by a light switch. That should work similar to what you are trying to do
By Greg Davis from Enfield, CT on December 26, 2013

They can be wired together. Make sure that you purchase the jumper cord that is available from the manufacturer.
By LehiTech from Lehigh Valley, PA on December 26, 2013

I believe they can be wired if you use a link cable. The cables are short, 12" I think, so if you are going to make longer runs that it will be an issue because you won't be able to plug the cables into an extension cord.
By Scot from Key Largo, FL on December 26, 2013

They come with a regular wall plug, so you can plug these into an extension cord to a powered switched outlet. I did this for my entertainment center that lights up with a switch. Hope this helps.
By Daren from Syracuse, UT on December 26, 2013

I have a similar setup in my house that we built and I used the same lights. All the lights go to a single wall switch. You'll need a hardwire box in each location. I used these: (Make sure you have the box corresponding to your lights. I used 3-wire version: Have an electrician run the wires in the wall to the boxes and to the switch. When you're ready to install the lights, plug one into the box and daisy chain them together (depending on your setup) with I used some small wire clips to attach the wires to the underside of the cabinet. Similar to these: I've included some pictures. If you have any other questions reply back. Works great and looks awesome.
By Richard from Missoula, MT on December 26, 2013

The NULS 8 fixtures that I use have a notice that says no more than 8 units (8 x 8 = 64 Watts) or no more than 70 Watts. Presumably this limit applies when they are wired together, one feeding thru to the next, using the sockets at each end of each fixture. If only two fixtures are wired together in this fashion at each location then each location would be well within the 70 watt limit. All four locations (132 Watts or less than 1.point 2 Amps total) would be well within the limits of a single 12 gauge 15amp circuit controlled by a single light switch. Because of the ordinary two prong power plug that comes with each fixture, I would be tempted to feed each location with an ordinary duplex wall outlet, but this would probably waste half of each duplex outlet because anything plugged into the extra socket would be turned off whenever the lights are turned off ,and also might overload the light switch.

PS regarding the NULS8s. I live in a camper and they work well both on commercial AC power but also work
when fed by a 12 volt battery through a power inverter.
Regards, Richard

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