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Description
RKS 4 ft. 118-Watt Equivalent Integrated LED White Strip Retrofit Kit 3500K (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 3500K CCT (warm 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
- 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 pre-drilled 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 |
| Fixture Color/Finish | White |
| Watt Equivalence | 118 |
| Commercial Light Type | Strip |
| Color Temperature | Warm White |
| Actual Color Temperature (K) | 3500 |
| Returnable | 180-Day |
| Wrap cover/lens included | No |
| 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
4.3 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Favorite socks
Size: Medium, Color: Black/Assorted
These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2024
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2025
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again.
I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers.
With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands.
They shift. They lose their shape. They get holes in them and wear out too fast. Not these.
I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ......
I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach.
The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new.
Like I said - I am back to buy them again. Great quality!
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Reviewed in the United States on January 20, 2021
★★★★★ 5
No slip low socks
Number of Items: 3, Color: Black/White (3-pairs), Size: Medium
Perfect! ❤️ these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
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