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Description
RKS 4 ft. 118-Watt Equivalent Integrated LED White Strip Retrofit Kit 4000K (1-Pack)Optilumen RKS Universal Fluorescent Fixture Retrofit Kit. Easily converts most all your existing residential and commercial 4 and 8 foot T5, T8 and T12 linear fluorescent light fixtures into an integrated LED light fixture. This retrofit kit works with the earliest to the latest versions of ceiling mount, four foot and eight foot fluorescent light fixtures, regardless of the style, manufacturer or existing ballast type including linear high bay, strip
Optilumen RKS Universal Fluorescent Fixture Retrofit Kit. Easily converts most all your existing residential and commercial 4 and 8 foot T5, T8 and T12 linear fluorescent light fixtures into an integrated LED light fixture. This retrofit kit works with the earliest to the latest versions of ceiling mount, four-foot and eight foot fluorescent light fixtures, regardless of the style, manufacturer or existing ballast type including linear high-bay, strip or wrap fixtures and even chain suspended shop lights. Since the retrofit kit contains the LED driver, there is no guess work to determine if it is compatible with your existing fixtures’ magnetic or electronic ballast. Super simple installation in 3 easy steps: 1). Remove existing bulbs and ballast. 2). Attach magnetically backed driver and connect to AC power source. 3). Attach magnetically-backed LED strips and quick connect to Y-harness. If your fixture isn't steel, no worries, the kit is pre-drilled and comes with mounting screws. The fixture is DLC listed to qualify for commercial lighting rebates and special incentives in certain regional areas.- One retrofit kit converts a 4 ft. fixture with 4 lamps or two 8 ft. fixtures with 2 lamps; See our Optilumen RKS Selection and Savings Chart
- Kit includes (2) 42 in. LED magnetic strips, (1) 40-watt driver, (1) quick-connect output harness, and optional mounting screws
- Energy efficient LED strip lasts roughly 182.5 years (Based on 3 hr/day)
- Estimated yearly energy cost: $4.82 (based on 3-hours/day and 11/kWh; costs depend on rates and use)
- Produces 5900 lumens of 4000K CCT (cool white) light
- Perfect for cold start applications down to -49°F and as high as 158°F; Turns on instantly with no annoying flicker or hum.
- Reduces energy consumption by over 70% over conventional light sources
- UL listed, suitable for damp locations, rated for 200,000 hours, DLC qualified and 7-year full warranty
- LED strips and driver are backed with rare earth magnetic tape, attaches to the existing steel light fixture in seconds
- For non-steel fixtures and high vibration applications, the kit is predrilled and comes with mounting screws too
- Thermally conductive rare earth magnetic tape maintains its extraordinary strength across wide temperature variations; it also acts as a heat sink which increases the life of the LEDs and driver
- Accepts 90 to 277-volt and 50 to 60 Hertz input
- Power factor of up to .989
Features
| Item Weight | 2.2 |
| Hooded | No |
| Color Temperature | Cool White |
| Fixture Color/Finish | White |
| Watt Equivalence | 118 |
| Commercial Light Type | Strip |
| Returnable | 180-Day |
| Wrap cover/lens included | No |
| Actual Color Temperature (K) | 4000 |
| Compatible Bulb Type | LED |
| Lumens | 5900 |
| Hardware Included | Yes |
| Connection Type | Hardwired |
| Replaceable LED Module | Yes |
| Dimmable | No |
| Fixture Color/Finish Family | White |
| Color Rendering Index (CRI) | 82 |
| Product Weight (lb.) | 2.2 lb |
| Package Quantity | 1 |
| Product Width (in.) | 46 in |
| Product Height (in.) | 5.5 in |
| Length/circumference (in.) | 42 |
| Product Depth (in.) | 2.75 in |
| Certifications and Listings | UL Certified |
| Manufacturer Warranty | 7 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2308 reviews
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Product Reviews
★★★★★ 5
Works as described
Color: Black
Love this whisk. I have arthritis and this is light weight enough for me to use. I love the push button, and the stand for it. It’s really easy to clean, and it blends my shakes nicely without leaving the powder behind.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Very Powerful Frother!!
Color: White
I’ve been using a frother daily for my drinks, and this one really impressed me with its power for such a compact size. It blends heavier powders into smooth, clump-free mixtures in seconds.
I’m a big fan of the build—the metal whisk gives it a solid feel, and it comes with a stand to keep it neat on the counter instead of being shoved in a drawer. Cleaning is a breeze, just a quick rinse, and the rechargeable battery lasts much longer than I anticipated between charges.
Just a little tip: start in a taller cup and don’t fill it all the way to the top, as this thing can create a serious vortex if you’re not careful. Overall, it’s been a super handy little tool, and I’m so glad I bought it.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Putting my $.02 into the mix
Size: Basic Frother, Color: Black
My old, lame hand mixer finally gave up the ghost. I ordered one of those “stick blenders” but it was waaaay too powerful for my purposes. (I don’t need it to dice/chop/pulverize fruits or veggies - if you need that, this mixer isn’t for you.) I needed something in between. I kept coming back to the “milk frothers,” but I had my doubts that one of those could mix up my morning shake. I tried a frother some years ago, and it wasn’t designed for blending ingredients, just for frothing liquids. Still, I had an idea (like some of you might) that what I needed was not a true stick mixer, nor a true milk frother. Something in between. I needed a “frother on steroids.”
I settled on this one-the YUSWKO YW-218. It had the regular frothing head, but also two other heads. One looks like a mini bread hook; the other like a mini whisk.
I plugged it into charge and it did take the stated time to come to a full charge. (Like any kid with a new toy, I tried turning it on before charging, but the low state of charge resulted in the high-medium-low settings not behaving correctly.)
For my first few forays into blending, I tried the mini bread hook thingee. It worked OK, but not as well nor as quickly as I wanted. I then shifted to the mini whisk thingee. I didn’t really prepare well. I combined my milk-protein powder-carnation breakfast-malt flavoring-imitation (yeah, I know, it probably causes cancer, but only in California) vanilla flavoring concoction into my normal medium-sized concession cup (you know, the smaller ones you get at high school basketball games), lowered the whisk head into the goop, and turned it to “low.” In a second, I was wearing my shake. But the power capacity was more than enough to do what I was needing.
Anyway, since that first attempt with the whisk head, I’ve gotten the routine down. And it is EXACTLY what I needed. (I’ll try to attach a video to show you.). Clean up is simple. You can do it with soapy water and a brush or rag, but I just run the thing in clear water and ensure I get all the sticky stuff off. I tried the soapy water, but I got a LOT of suds.
A few pointers. First, charge it up all the way before using it. I haven’t had to recharge for two weeks now. You’ll use a regular, small phone-charging brick. (Two words of CAUTION. I found that the included, cheap charging cord did not work. It got really hot, like there was an electrical short in it. So I found one of my own. Also, DO NOT USE the larger charging blocks like the ones from Ap*le. I tried and it was too much.) Second, I assumed that the low speed would be the less aggressive and thus the less “throw-stuff-out-of-the-cup” setting. But that hasn’t proven true for me. I’ve found that the medium setting makes my ingredients behave better (less throw-out and quicker blending). Experiment with different speeds, even though it may not make immediate sense. Third, practice with plain water first (I’ve already told you how I know this). That’ll give you a “feel” for what this frother will do. Fourth, practice with different sized cups. I’ve since changed to the taller concession cups, as they prevent throw-out. Fifth, start practicing with your cups down in a sink. Less mess to clean up and no need to change clothes before you head out to work or school (I’m a teacher). Finally, familiarize yourself with the way the three buttons work. My previous mixer required me to keep the button depressed to blend. If I let up on the button, the unit would stop. Not so with this one. A light press to start, let go, then a light press to stop. Don’t keep mashing the button.
Final thoughts: this frother is just what I needed. If your experience sounds like mine, I think this one’ll give you good service.
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Reviewed in the United States on November 25, 2022
★★★★★ 5
Excellent frother
Size: Basic Frother, Color: Christmas Red
This item works great! I love the red color and how easy it is to clean, and howneasynitnis to charge. I also like that there are three different attachments to choose from.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Perfect and convenient tool
Size: Basic Frother, Color: Black
I am very happy with my new milk frother. Really easy to use and I was very pleased with the results. I got to enjoy my first home made cappuccino and it was perfect. I have only used the frother attachment so far but I plan to use the whip the next time I scramble a couple of eggs. Very please with my purchase.
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Reviewed in the United States on June 3, 2026