What SLP Lighting does

SLP Lighting (legal entity SLP Lighting, LLC), founded in 1969 and operating as a wholly-owned subsidiary of the family-controlled Koller Enterprises Inc., manufactures vapor-tight LED lighting fixtures, optical components, and related accessories for harsh-environment applications. The company's flagship Citadel Enclosures product family spans multiple form factors (Citadel 2 in 2ft/4ft/8ft, Citadel 4, Citadel 4i, Citadel 4s, Citadel Round, and the Citadel Value Series) and carries IP65 through IP69, NEMA 4X, NSF, UL, DLC, and BAA/BABA certifications, addressing food processing, federal government, commercial infrastructure, and cold storage end markets. Complementary product lines include Profile I (co-extruded polycarbonate linear), ProTube (IP69 washdown circular), AlumiBay (linear high bay), and CircLED (polymer round high bay developed with Covestro materials), alongside an extensive portfolio of louvers, lenses, wire guards, and complementary components.

The underlying technology base rests on proprietary in-house capabilities including pour-in-place polyurethane gasketing, injection molded lens systems (Guardian Seal), the PinSert latching mechanism, and nearly fifty years of vacuum metallizing expertise. SLP operates 57+ injection presses (88 to 2,750 tons) across facilities in Fenton, MO (headquarters and international sales), Sullivan, MO (primary manufacturing and logistics), and Gadsden, AL (additional injection molding capacity), supported by an in-house Heat Lab, IP Test Booth, and Goniometer. The company maintains an ABS prototyping workflow and laser fabrication capabilities that support both its own product development and third-party OEM customers.

SLP's revenue model combines proprietary hardware sales with B2B contract manufacturing and metallizing services sold to lighting OEMs globally. Products are sold configure-to-order with quote-based pricing rather than public list prices, supported by a regional direct sales team with territory-based account managers and a 40+ year exclusive distribution partnership with R&R Plastics in the Northeast. Creative Lumens Lighting operates as a wholly-owned division handling in-house circuit board assembly. Marketing is concentrated around the LightFair trade show, a YouTube channel, technical content marketing, and earned media in Edison Report, LEDs Magazine, and LED Professional. The company is privately held with no public revenue disclosure, no external institutional funding, and no M&A track record beyond earlier subsidiary acquisitions such as Star Lighting.

Name

SLP Lighting

Legal name

SLP Lighting, LLC

Website

https://slplighting.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

101–250 employees

Short description

SLP Lighting, founded 1969 and part of Koller Enterprises, manufactures vapor-tight LED lighting fixtures and optical components for harsh environments alongside contract injection molding and metallizing services, serving food processing, federal, and commercial infrastructure customers across North America.

Ownership category

akta.pro rank

Product category

Commercial and Industrial LED Lighting Fixtures

NAICS

Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing (335132), Electric Lighting Equipment Manufacturing (3351)

SIC

Electric Lighting & Wiring Equipment (3640), Optical Instruments & Lenses (3827)

akta.pro primary industry

Specialty & Task/Workstation Lighting (Inspection/task lights, cleanroom/food-grade, portable work lights) (IMAGAIAK)

akta.pro secondary industries

Outdoor & Area Lighting (Street, Roadway, Parking, Flood, Sports/Architectural exterior) (IMAGAIAB), Lighting Controls & Building Integration (Drivers, sensors, dimming, lighting control panels, networked lighting) (IMAGAIAI)

Keywords

• Vapor tight lighting fixtures
• LED lighting enclosures
• Lighting optics components
• Contract injection molding
• Vacuum metallizing services

Headquarters

HQ city

Fenton

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Lighting Fixtures and Components: Sale of proprietary lighting products including vapor tight enclosures, LED fixtures, louvers, lenses, and accessories
2. Contract Manufacturing: Precision manufacturing services for third-party components using injection molding, metal stamping, and fabrication capabilities with 57 presses across facilities
3. Vacuum Metallizing Services: Coating services for plastic, glass, and metal components with decades of expertise serving global OEMs

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

SLP Lighting manufactures and sells weatherproof vapor-tight LED and fluorescent lighting fixtures and components — primarily the Citadel Enclosures family (Citadel 2, Citadel 4, Citadel 4i, Citadel 4s, Citadel Round, Citadel Value Series) — along with linear and high-bay LED fixtures (Profile I, ProTube, AlumiBay, CircLED), optical control components (Parasquare louvers, Thincell eggcrates, lenses), and protective accessories (wire guards, complementary components). The company also offers contract manufacturing services (injection molding, vacuum metallizing, gasketing, laser fabrication, prototyping) for third-party OEMs through 57+ injection presses across its Missouri and Alabama facilities.

Product overview

SLP Lighting is a lighting component manufacturer and solutions provider founded in 1969, operating as part of Koller Enterprises. Its portfolio is organized around two core pillars: finished lighting products (LED fixtures and optical control components) and manufacturing services (injection molding, fabrication, gasketing, vacuum metallizing, prototyping, and contract manufacturing). The finished products are led by the Citadel Enclosures line — a family of weatherproof vapor-tight fixtures including Citadel 2 (2ft/4ft/8ft), Citadel 4 (wide body), Citadel 4i (industrial), Citadel 4s (compact), Citadel Round, and the entry-level Citadel Value Series — all IP65 through IP69 rated and NSF-certified for food processing environments. Complementary LED linear fixture lines include Profile I (co-extruded polycarbonate linear light, IP66, NSF), ProTube (circular IP69 washdown fixture, NSF food-zone), AlumiBay (linear high bay), and CircLED (polymer round high bay). Optical accessories include parabolic louvers (Parasquare P1/P2/P3), eggcrate louvers (Thincell, aluminum), decorative louvers (Angleflex), and flat sheet lenses (Frost LED, PR12, PR19, cracked ice). Wire guards and complementary components (remote boxes, hooks, hubs, retention clips) round out the component offering. SLP's manufacturing services encompass contract injection molding (57+ presses across Missouri and Alabama facilities), laser fabrication, pour-in-place gasketing, vacuum metallizing, engineering and development, and ABS prototyping — all supporting both SLP's own product lines and third-party OEM customers. The company holds BAA and BABA compliance for federal procurement.

Differentiator

Problem solved

Functional benefit

Products and services

• Citadel Enclosures Weatherproof vapor-tight LED and fluorescent enclosures protecting lighting in harsh wet, dusty, and washdown environments. The Citadel family includes Citadel 2 (2ft/4ft/8ft), Citadel 4, Citadel 4i (industrial), Citadel 4s (compact), Citadel Round, and Citadel Value Series variants, with IP65 through IP69 ratings and NSF certification for food processing applications.
• Profile I LED Linear Fixture LED linear fixture with seamless co-extruded polycarbonate housing and lens, IP65/IP66 rated, UL wet location rated, available in 2ft, 4ft, and 8ft lengths in black or white, NSF component listed. Targeted at commercial and architectural applications.
• ProTube IP69-rated washdown LED linear fixture with smooth circular polycarbonate housing, NSF-certified for food zones, tool-free linkable end-caps, withstands high-pressure high-temperature washdowns up to 80°C. Designed for food processing and high-sanitation environments.
• AlumiBay Linear high bay LED fixture for damp or dry locations and architectural applications; SLP's newest product line addition.
• CircLED Thermally conductive molded polymer high/low bay lighting fixture, IP65 rated round high bay driver, lighter-weight alternative to die cast fixtures, thermally manages up to 200W LED engines. Developed in partnership with Covestro for materials application.
• Louvers, Lenses & Eggcrate Optical control components including Parasquare parabolic louvers (P1, P2, P3), Thincell and aluminum eggcrate louvers, Angleflex decorative louvers, and flat sheet lenses (Frost LED overlay, PR12, PR19, flexible sheet, cracked ice) for LED and fluorescent lighting fixtures. Internationally recognized product line.
• Wire Guards Protective steel wire guards for strip fixtures, high bay industrial, reflector series, and flat wire guards, available in multiple finishes (raw steel, white, black, chrome) with various cell configurations and wire gauges.
• Complementary Components Supporting accessories including Remote Box Enclosure, NEMA Remote Box Enclosure, SLP Hook, end plugs, LED Board Retention Clips, and hubs for Citadel enclosures.
• Contract Manufacturing Injection molding with 57+ presses (88 to 2750 tons) for thermoplastic components up to 22 lbs or 8 feet; metal stamping, roll forming, and turret pressing; robotics for part handling and assembly; additional capacity at Gadsden, Alabama facility. Serves third-party OEMs requiring precision plastic components.
• Fabrication Laser cutting of plastic materials for custom shapes and cutouts for lighting applications, minimizing waste and reducing lead times.
• Gasketing Pour-in-place polyurethane gasket technology for reliable IP-rated seals in lighting components, enhancing durability and environmental protection.
• Vacuum Metallizing Vacuum metallizing coatings for plastic, glass, and metal components, creating durable reflective and decorative finishes with a super mirror finish for lighting reflectors. Nearly 50 years of expertise serving global OEMs.
• Prototyping ABS model prototyping for fit and function testing, iterative design refinement, and early-stage validation, ensuring products are optimized for end use and molding before full-scale production.

Quantifiable outcome

• IP69 rating for highest pressure washdown protection (up to 1,450 PSI and 176°F)
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and flagship.

• CovestrocoreTechnology or IntegrationCovestro partnered with SLP Lighting on the material and application of the CircLED. Covestro's materials enable the thermally conductive molded polymer high bay fixtures.
• Creative Lumens LightingflagshipStrategic or Co-development PartnerCreative Lumens Lighting is a division of SLP Lighting, LLC. They handle circuit board projects for low-volume to high-volume requirements, offering customers options to reduce cost and lead times.

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Emerging players

• Luxo: Specialty lighting manufacturer with overlap in task, inspection, and industrial-grade luminaires; comparable in technical-lighting niche where SLP's workstation/cleanroom fit applies.
• BEGA: Specialty architectural and outdoor lighting manufacturer with strong harsh-environment and specification-grade credentials; an emerging adjacent competitor in premium outdoor and wet-location fixtures.

Broad incumbents

• Eaton (Cooper Lighting Solutions): Major lighting incumbent with extensive industrial, commercial, and outdoor portfolios; overlaps with SLP in vapor-tight and food-processing applications and competes for federal and infrastructure specifications.
• Hubbell Lighting: Broad commercial/industrial lighting incumbent (Columbia, Prescolite, Litecontrol) competing across the same verticals as SLP with significantly greater scale and distribution.
• Signify (Philips Lighting): Global lighting incumbent whose Philips and Day-Brite portfolios overlap with SLP's commercial and food-processing lines, with the scale advantages of a multi-billion-dollar parent.
• Lithonia Lighting: Acuity-owned commercial/industrial brand covering vapor-tight and high-bay categories where SLP competes; broader SKU breadth and national distribution network.
• Acuity Brands: Largest US-focused lighting and building-solutions company (Lithonia, Holophane, Gotham) with overlapping industrial/commercial product lines and a much larger enterprise sales footprint.

Direct peers

• RAB Lighting: Commercial and industrial LED fixture manufacturer with strong contractor/distributor channel; comparable in target customer (commercial/industrial facility owners) and configure-to-order quoting model.
• Kenall Lighting: Specialty manufacturer of sealed, high-abuse, and NSF-rated LED luminaires for healthcare, food processing, correctional, and transit environments — a direct competitor in the harsh-environment vapor-tight niche that defines SLP's Citadel Enclosures line.
• Dialight: Industrial-LED specialist focused on hazardous-location, high-bay, and harsh-environment fixtures; competes head-to-head with SLP in heavy industrial and washdown-rated applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@SLPLighting
• Xx.com/SLPLighting
• Facebookfacebook.com/slplighting

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SLP Lighting