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Electric Light Kit for TGF 022 SUN TUNNEL Tubular Skylights

  • Engineered with UL listed parts that offer reliability and safety
  • Illuminates the room at night as well as during the day
  • Suitable for both rigid and flexible models
  • View More Details
How to Get It

Product Overview

VELUX SUN TUNNEL tubular skylights can be a source of illumination at night as well as during the day. The ZTL light kit can be installed in only minutes, and goes inside the tunnel just above the diffuser. It works with both rigid and flexible models.
  • For 22 in. VELUX SUN TUNNELS, use 13-26 Watt GU24 compact fluorescent light bulb (not included)
  • Do not use incandescent bulbs due to accumulation of heat
  • The product has been designed with UL listed parts and is UL recognized with some conditions for acceptability
  • ZTL 122 light kit model is designed specifically to be installed with 22 in. VELUX SUN TUNNELS, including TGF 022
  • If you have a 10 in. or 14 in. VELUX SUN TUNNEL, you should order the ZTL 114 light kit instead
  • Not designed for use with other manufacturers' products
  • Click here for more information on Electronic Recycling Programs

Additional Resources

From the Manufacturer

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Product Depth (in.)
22 in
Product Height (in.)
22 in
Product Width (in.)
22 in


Accessory Type
Electric Light Kit
Color Family

Questions & Answers

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Customer Reviews

  • 3.3
    out of 12 reviews
  • 58%recommend this product
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Showing 1-10 of 12 reviews
Good light, poor reveal
Had a new rigid tunnel installed along with roof a few weeks ago. The sun tunnel adds a much needed influx of natural light to my livingroom but as many other reviews note the diffuser ring inside looks very cheap and has screws visible through it. Most of the pictures I had seen before getting it showed a white trim ring that sits flush to the ceiling and covers all of the hardware underneath, this one is nothing but clear plastic that all of the mounting hardware is visible through and it sits up off the ceiling creating a bit of a halo effect around it. I'm happy to have the light in my room but wish it looked more clean and professional on the interior.
Response from Customer ServiceMar 27, 2020
Thank you for your comments. This updated diffuser was supposed to include a white ring that hides the supporting hardware and provides a nice, clean appearance. Please send us an email with the sun tunnel size and your contact information to: vcustomer.service@velux.com so that we can send this item to you. We hope once installed, that it will add to your enjoyment of your new sun tunnel.
    Horrible looking trim
    The trim on this light looks SO terrible! Cheap looking clear plastic that you can see screws through?! I will be calling customer service and I hope they have a solution because I’ve now spent a lot of money on this item plus installation.
    Response from Customer ServiceFeb 14, 2020
    It appears that you are missing the white screw cover ring that comes with our newest design of Sun Tunnel. Please give us a call at 1-800-888-3589 and we will be happy to send that component out to you!
      Way Too Bright
      What are the options for capping/covering and/or removing the suntunnel altogether? Is there any way to deconstruct the internal workings of the sun tunnel and make it more like a sky light? In other words, keep the bright light closer to the roof and not project it down to the ceiling? I have mine covered with cut-up garbage bags and construction paper until I hear back from my installer. We totally overdid it.
      Response from Customer ServiceNov 2, 2020
      Perhaps a VELUX Daylight Controller is the answer. It would allow as much or as little light into your living space and is installed in between the rigid tubing sections. Please call VELUX Customer Service @ 1-800-888-3589 to help you determine the best option.
        Homemade Diffuser
        I had three Sun Tunnels installed - two in the great room & one in my master bath. The one in the bath lets in so much light that I don't have to turn on a light during the day. One of the great room ones is over my tv & caused glare during the day. So I made a "diffuser" by cutting a circle from a white fiber mailing envelope & putting it in the lens. It filters the light & worked great.
          • Recommended
          Love my Sun Tunnel
          When I was replacing roofs, I purchased a total of 4 of these for 2 of my houses. The roofers did the roof part and I installed the inside myself. As a female I found it incredibly easy, but I am a diy girl. In my house, my kitchen is now bright and beautiful. My living room, well it was my placement of it that i wish i would have changed, because of my attic walking space, but it still gives a lot of light into the dark side of my living room. We hardly turn on any lights now. At my other house we are coming down to the 1st floor, but wish there was an add on or small section that could be added to the tunnel itself to add just a bit of light to the hallway upstairs. The tube will be covered, not visible but would love to have just a small bit of that natural light to come thru there as well. Love my lights
            • Recommended
            Great Light but how do i remove debris from tube
            I've had great experiences with your product but I now have debris in the tube and I have a very simplified that shows how to remove the "beauty ring" but not the difuser.
            Response from Customer ServiceSep 1, 2020
            Once the trim ring is removed, there may be 3 or more little tabs that hold the diffuser assembly upwards in that ceiling assembly. Loosen those screws only slightly to push those tabs out of the way. (some sun tunnels have them, some do not) You may need to take a small, flat (or common) screwdriver to work the gasket and diffuser out from the assembly. Use a little Vasoline on the tip of the screwdriver to make this process a bit easier. Once you have that completed, you will need to check to see if the Sun Tunnel tubing in the attic space has any exposed seams, holes, tears or screw heads exposed. If you find those uncovered, please use aluminum tape to seal those areas. If you have a flexible tubing model-You may also want to check to see that the snap ring (ring that attaches tunnel to exterior & interior components) on both ends of the tunnel are secure. This will prevent any bugs or dirt from getting into that tubing space again. If you have any difficulty with this process, please call VELUX Technical Service for assistance by calling 1-800-888-0361.
              • Recommended
              Love the light, hate the trim (cheap)
              Love the extra light that it brings in, but like the other reviews, not a fan of the clear trim (screws showing). Our twinhome association purchased 9 of the 14" rigid tunnels in 2019 , was hoping for a more finished look on the ceiling.
                • Recommended
                Adds fantastic amount of light!
                I had threesun tunnels installed in dark areas of my house, which really brightened everything up. However, the bright white light really was not the look of my home. The contractor changed out the diffusers to "amber", which helped a lot, but one area is still much too bright. Can two diffuser lenses be used in the tube without creating heat? Or is there enough space in the tube to do so? If it is possible, which diffuser lens would you suggest to use with the amber presently in place, to give a soft amber glow?
                Response from Customer ServiceMar 13, 2020
                The clear edged diffuser design will allow more than one diffuser lens to be placed inside of it. So you could add the natural lens and another selection so that you can get the look that you want, without worrying about heat issues.
                  • Recommended
                  Trim look horrible
                  I just installed and the trim ring and cover are horrible- now I have to find a way to disguise the interior portion...
                  Response from Customer ServiceFeb 13, 2020
                  We are sorry to hear that you are not satisfied with your VELUX Sun Tunnel's appearance and would like to help you find a solution. Please send your comments as well as any pictures of your sun tunnel to: vcustomer.service@velux.com and we will be happy to help find a resolution to this issue.
                    Rim looks cheap
                    We just installed two solar tubes . The trim and rim looks very cheap. Is there any way to change the rim ?
                    Response from Customer ServiceJan 20, 2020
                    We are sorry to hear that you are not happy with your VELUX Sun Tunnel and want to make sure that you are satisfied. Please give our Customer Service team a call @ 1-800-888-3589 so that we can determine which options are open to you on this product. Once complete, we know that you will enjoy the amount of reflected light that will enhance your living space.
                      Showing 1-10 of 12 reviews