SLP Lighting
A leader in developing and manufacturing a full range of lighting solutions and innovative products. In 1969, Koller Enterprises Inc.
formed Scientific Lighting Products(SLP). SLP started with three different louvers and based on customer needs. Today SLP Lighting is a leader in developing and manufacturing a full range of lighting solutions and innovative products such as our Citadel Enlcosures, Parabolic, Aluminum and Decorative Louvers, Prismatic Lenses Eggcrate and many more products. SLP provides custom products with begining-to-end service including: Engineering, Design, Prototyping, In-House Testing, Manufacturing, Distribution and more!
10/07/2026
October 7th is National LED Light Day. Three things worth knowing:
1. The date marks the 2014 Nobel Prize in Physics for the blue LED, the piece that made white LED light possible.
2. Bridgelux founded the day in 2016.
3. LEDs use 75 to 80% less energy than incandescent bulbs.
4. SLP started in 1969 - when LEDs were tiny indicator lights.
What's the oldest lighting still hanging in your facility? Would it make Thomas Edison proud or Oleg Losev?
10/06/2026
Our quiet workhorse is getting some well-earned attention.
The SLP Remote Box gives LED drivers a home of their own, mounted where they're easy to reach, easy to service, and built to last.
NEMA4X, NSF and UL Listed. Made in the USA. Built to order for OEM applications.
Ready to put one to work?
https://www.slplighting.com/products/remote-box
09/30/2026
Recertified! Our Sullivan facility has renewed its ISO 9001:2026 certification. For our OEM partners, that's independent confirmation that every build follows a documented, verified quality process. Thank you to Justin and the whole team for the hard work behind this milestone.
Documentation is on our website here:
https://www.slplighting.com/
09/23/2026
Look closer. That's not aluminum.
The CircLED housing is molded from thermally conductive polycarbonate by Covestro. It pulls heat away from the LEDs, weighs less than die-cast, and won't corrode.
Built in Missouri by SLP Lighting.
https://www.slplighting.com/products/circled-round
09/16/2026
The IRL Glow-Up 💡
We donated CircLED high bay lights to The National Museum of Transportation in St. Louis. Out with the old metal halide. In with CircLED.
Swipe the before and after. Same space. Completely different experience. Brighter, cleaner, more energy efficient light from top to bottom.
They actually had to dim them in certain areas. We'll take that as a compliment.
Proud to support a local landmark at The National Museum of Transportation. Even prouder that our lights are the ones making the exhibits look this good.
09/10/2026
V***r Tight Citadel 4 doing exactly what it's built for, holding up strong in the harsh, wet environment of an industrial car wash. Nothing beats seeing our fixtures proving themselves in the field.
https://www.slplighting.com/products/citadel-4
***rTight
09/04/2026
Tampa Bay. Miami. Port St. Lucie. Orlando.
Four cities, a lot of miles, and a full week with our Florida OEM partners.
Happy Labor Day from 1,000 miles out. To everyone putting in the work, on the road or on the floor, enjoy Monday.
09/03/2026
The SLP ProTube is built specifically for food processing environments. It resists harsh sanitizing chemicals, withstands high-pressure water spray, and wipes clean fast with a smooth, seamless profile.
Tough construction and BAA/BABA compliant.
https://www.slplighting.com/products/protube
Citadel 2 Mounting Brackets, coming off the press.
Our design. Flat metal in. Finished brackets out. All day long.
This is the power of manufacturing. 🔩
08/18/2026
West Coast, here we come. ✈️ Our sales team is on the ground in Long Beach this week, meeting with top OEM partners and showing off the future of SLP v***r tight technology. Here's to building great things!
***rTights
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