






💡 Illuminate smarter, work longer, and see clearer with OttLite’s daylight brilliance!
The OttLite T18330 is an 18-watt compact fluorescent replacement tube bulb engineered to deliver 900 lumens of natural daylight illumination at 5000K color temperature. Designed to reduce eye strain with low glare and heat, it offers true color rendering (96 CRI) and lasts up to 10,000 hours—using 75% less energy than traditional incandescent bulbs. Perfectly compatible with OttLite Type B lamps, it’s the smart, energy-efficient choice for professionals seeking clarity and comfort in their workspace lighting.











| ASIN | B003W0TMQ8 |
| Accepted Voltage Frequency | 100 to 120 Volts and 60 Hertz |
| Additional Features | Color Corrective Lighting 5500K, 96 CRI, True Color Sun Light Simulating, Works in all Lamps that use PL 18 watt bulb |
| Best Sellers Rank | #95,429 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #106 in Compact Fluorescent Bulbs |
| Brand | OttLite |
| Brand Name | OttLite |
| Bulb Base | BA21D |
| Bulb Shape Size | T8 |
| Color | White |
| Color Rendering Index | 80 |
| Color Temperature | 5000 Kelvin |
| Connectivity Technology | Normal bulb |
| Control Method | App |
| Controller Type | Push Button |
| Customer Reviews | 4.5 out of 5 stars 3,302 Reviews |
| Efficiency | Energy efficient, long-lasting |
| Global Trade Identification Number | 00761712003597 |
| Incandescent Equivalent Wattage | 60 Watts |
| Included Components | 1 OttLite 18-Watt Replacement Bulb |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 6.3"W x 9.63"H |
| Item Weight | 0.19 Pounds |
| Light Color | Daylight White |
| Light Output Maximum | 900 Lumens |
| Light Source Operating Life | 10000 Hours |
| Light Source Type | Fluorescent |
| Light Source Wattage | 18 Watts |
| Light Type | Fluorescent |
| Manufacturer | Ott-Lite |
| Manufacturer Part Number | T18330 |
| Manufacturer Warranty Description | 1 yr. |
| Material Type | Glass |
| Model Name | NaturesSunlite™ Replacement for Ott-Lite 18 watt |
| Model Number | 86998 |
| Number of Items | 1 |
| Package Quantity | 1 |
| Power Consumption | 18 Watts |
| Power Source | Corded Electric |
| Shape | Tubular(T) |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Color Corrective Lighting 5500K, 96 CRI, True Color Sun Light Simulating, Works in all Lamps that use PL 18 watt bulb Special Feature Color Corrective Lighting 5500K, 96 CRI, True Color Sun Light Simulating, Works in all Lamps that use PL 18 watt bulb See more |
| Specific Uses For Product | Lamp |
| Style Name | Bulb |
| UPC | 761712100197 885605555151 761712103143 683203261913 761712003597 043939895668 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts |
| Wattage | 18 watts |
| White Brightness | 900 Lumens |
K**P
It works!
Replacement bulb works great! Love this lamp for my quilting room.
J**Y
Quality product
It's the bulb I needed but the lamp quit
C**E
Fits the older OttLite floor lamp!!!
Several years ago, I tried to find a replacement for my Ottlite Daylight gooseneck floor lamp, just to have a spare for when the bulb finally failed. I actually bought a couple of bulbs whose descriptions "promised" they would fit. But, they didn't -- not even close. Even the fabric store where I bought the light couldn't find compatible bulbs. I gave up the search. Luckily, the original bulb lasted more than 20 years (!). But, last week it finally failed, so my search began again. When I saw reviews for this bulb that referred to the OLDER Ottlite lamps, hope returned. This bulb FITS my Ottlite model U203030!!! It requires some careful muscle to push it in (it snaps sharply upon installation), but that's also true for the original bulb. If I could give this product 10 stars, I would.
G**.
Great replacement bulb, however, READ ALL OF THE FINE PRINT ON YOUR LIGHT FIXTURE
The light is used by my 98-year-old mother, to read, in conjunction with the mounted magnifying glass; it was imperative that it be replaced quickly as she had used it for over seven years... I suggest that a prospective buyer read ALL of the instructions on the Amazon posting for this, or ANY OttLite product. In truth, I had to revisit my mother's light fixture three times to FINALLY find the model number that fell into one of the long lists of model numbers for specific replacement bulbs. Then I ordered the designated bulb to see if it fit, and it did. Now I've ordered a second bulb so that there will be no lapse in use in the future. Otherwise, no issues; the bulb works as advertised.
D**F
Love the natural light.. o/
My mom had purchased the lamp that used these bulbs originally for her sewing she was doing. When I went away to college I needed a good light to read by and she let me have it. Ive used it for years, and the bulb burned out - so bought a replacement and sadly replacement had week spot in the glass at the end tip and well would not work when glass was broken.. Cant fault the company or amazon - just sometimes glass bulbs are difficult to judge if its thick enough or to thin.. I ordered a replacement already. Asked Amazon for refund / replacement.. - So while I wait another couple days id give 4.5 stars if I could - or more but had to be honest that im bummed not having the light working :/ ottlites are great - but waiting for bulbs is not fun.. more so when your a heavy reader like me.. will be waiting a few days for new bulb - then hopefully this one works and slots in nice/easy XD
S**E
Out dated Ott Light bulb.
Great customer service. I ordered an Ott Light fluorescent bulb on Amazon. Bulb shipped on time, no issues there. During the process of replacing the bulb, I noticed the new bulb T18330 did not have the same cutouts in the base, like my old bulb. Picture attached. I tried to contact Ott Light through a number I found on line with no results. I went through the automated Amazon message assistant and got immediate results. I worked with a person named Gina, from Ott Light. She tried her best to answer my questions and resolve my situation. She sent me a new bulb thinking the factory sent the wrong style but basically I ended up with two bulbs that didn’t fit the lamp I was repairing. Gina never gave up though. She told me that one of her supervisors or someone else who had been with Ottlight longer than her was on vacation and would try to come up with a solution for me when she got back. True to her word, Gina got back to me and had learned of a work around which required trimming the matching notches in the bulb receptacle so they didn’t interfere with the new bulb that doesn’t have the notches in its base. I figured as much but didn’t want to alter someone else’s fixture without the company’s, or the owners consent. In the process of trying to find the correct bulb for this particular desk lamp, Amazon and or Ottlight refunded my original purchase price and I still have the extra bulb they sent. I contacted Gina and explained I have two bulbs and have been refunded, she said to keep both bulbs and that they were just happy to resolve the issue with this particular situation. I am always happy to share good experiences with todays customer service. Thanks to Gina, I will consider buying an Ottlight in the future. Thank you Amazon and Gina at Ottlight. Scott M. Rochester, NY.
P**.
OTT LITE
The bulb that I purchased came fast and was well packed. However, I must warn purchasers that the bulb may not be the problem if your OTT Lite is not working. It seems that the ballast or transformer on many OTT Lites is not the most reliable component. Afer receiving my bulb and finding out that my lamp was not working with either bulb, the old or the new, I did research on the web and found that the OTT Lite has serious problems with the ballast burning out and being very expensive to replace. I called OTT and found out that they would sell me a new ballast cord assembly, but I would probably need to pay someone to replace it. That part would cost $20 plus labor. They told me that they would sell me another lamp with 20% off. That would cost around $52 or $53. However, it was cheaper on Amazon.com. I did some shopping and found places like Tuesday Morning were selling similar lamps at lower prices still. They had the a fancier Ott Lite for 49.99 with a long 18W bulb and the Verilux Lamp for around $40 on a special sale. Bottom, line, you may not need a bulb, the lamp may be defective not the bulb. However, if you do need a bulb, this company sells a good product at a fair price, and ships very quickly and sends the product extremely well packed. Good seller.
R**.
Easy to use
Versatility
C**Y
Just what is needed.
After a long time looking for replacement bulbs I finally found the one I need .
S**E
Excelente producto
Finalmente encontré donde encontrar estos focos en México!! Lo triste es que mi lampara creo que no funciona, estoy viendo como arreglarla pues finalmente tengo el foco y no la puedo uasr...
P**Z
Bulb shines like day light
This is a replacement bulb for my craft light which is perfect for fall illumination of my work area. It works well as expected.
V**W
Delighted!
Arrived promptly and fitted perfectly. My out lite is ,many years old and hoped this would fit, now as good as new. Thank you.
J**E
as described
works perfectly in my Ott Lite lamp
Trustpilot
2 weeks ago
2 days ago