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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 |
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 2244 reviews
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Product Reviews
★★★★★ 5
Don't peek at the next page.
Format: Hardcover
Basically, best practices in game engine architecture, citing a wide array of game engines used by a wide array of top game makers.
Out of a ~1150 page book:
The longest chapter is ~150 pages, on Parallelism and Concurrent Programming.
Rendering Engine is ~100 pages
Collision and Rigid Body Dynamics is ~100 pages
3D Math for Games is ~50 pages
I had hoped for treatments on quaternion camera and for entity component system, but alas, no.
What I did get was still crucial. The most illuminating guidance was in Engine Support Systems (~50 pages) which talked about best Memory Management, and in Game Loop and Real-Time Simulation which talks about ideal orders of operations in a highly efficient game loop.
The first 400 pages of this book are not exclusive to games. A new programmer that wants to do high performance programming can gain a lot from this before it gets into 'primarily' game topics.
My strategy for getting through this whale was to never peek at the next page. I did not read (Character) Animation Systems (~100 pages) or Audio (~100 pages), as I do not need them at this time.
You can certainly damage the book if you don't keep in mind its weight, or if you do that maneuver where you forcibly open it against its spine. I did that and the binding popped off the backing. It's all in one piece, and it's easier to read. It's a big tome.
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Reviewed in the United States on February 6, 2022
★★★★★ 5
The Bible, if it was good
Format: Hardcover
I’m not kidding when I say the first 350 pages of this book are quite literally an entire computer science degree. In fact, many CS majors would learn more about some of these subjects here than in their classes. I’m incredibly impressed with the thoroughness and depth of this absolute tome, and I’ll be far more impressed if the binding is able to hold on to all 1200 pages for the whole time it takes me to read it.
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Reviewed in the United States on October 29, 2024
★★★★★ 5
Imprescindible
Format: Hardcover
Libro esencial para entender aspectos técnicos y completar la formación de los estudios universitarios .
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Reviewed in the United States on October 15, 2025
★★★★★ 5
good quality
Format: Hardcover, Format: Hardcover
Content is top notch as always. My 5-stars go mainly to reflect print quality of the book. Text is nice and clear, binding is done in proper cloth spine binding as you would expect from hardcover edition. Ordered my book on Feb 5th, 2019 and received it on Feb 11th, 2019. The book feels solid not like to fall apart right away. No issues like those reported for "Real-Time Rendering, 4th Edition" or "Physically Based Rendering: From Theory to Implementation 3rd Edition" or "3D Math Primer for Graphics and Game Development, 2nd Edition". This one is a keeper, so sad some other CG books had to go beacuse of the quality "issues".
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Reviewed in the United States on February 13, 2019
★★★★★ 4
An Invaluable Book
Format: Hardcover, Format: Hardcover
Game Engine Architecture" by Jason Gregory has proven to be a treasure trove of knowledge, especially in the realms of lower-level computer programming and the inner workings of CPUs. The first third of the book, which I have thoroughly enjoyed, dives deep into the intricacies of memory management and concurrent programming. Gregory’s explanations are so lucid and engaging that the complex concepts of memory orders such as relaxed, release, and acquire have become clear to me, showcasing their critical roles in programming.
What is particularly remarkable is how the book's first 400 pages serve not just as a guide to game engine architecture, but also stand on their own as an excellent introduction to computer science. It's a testament to the author's skill in distilling complex material into digestible content that even those without a vested interest in game development would find immense value in.
However, a caveat I must mention is the book's physical heft. Its size and bulk make it somewhat unwieldy, and I learned this the hard way when it fell from my desk. The impact caused the page binding to tear away from the hard cover, which was disappointing considering the book's cost. Nevertheless, with some craftiness involving thick drawing paper and glue, I managed to repair it. If the author adds any more information to the next edition, it'd probably be best to turn this into a 2-3 volume set to manage the size.
Despite this setback, the book remains an invaluable resource. Its depth and clarity are unmatched, making it a worthy addition to any tech enthusiast's library. Just be sure to handle it with care.
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Reviewed in the United States on November 11, 2023