TECHNICAL GUIDE
CCT vs. CRI vs. TM-30: LED Color Quality Explained
CCT, CRI and TM-30 answer different color questions A specification such as “4000K, high CRI” narrows a product selection, but it does not describe...
Read Technical GuideHave an account? Log in to check out faster.

COMMERCIAL LIGHTING SUPPLY / EST. 1996
Commercial LED lighting, industrial fixtures, and specification-grade lighting solutions for projects of every scale.
INDOOR & OUTDOOR LIGHTING · COMMERCIAL & INDUSTRIAL · NATIONWIDE SUPPLY
THE COMMERCIAL LIGHTING SOURCE
Commercial Lighting Supply provides commercial indoor lighting, commercial outdoor lighting, industrial LED lighting, exit and emergency lighting, LED replacement lamps, and lighting controls and electrical supplies. From warehouse high bays and parking lot fixtures to office troffers, wall packs, and retrofit solutions, our catalog helps contractors, electricians, facility managers, and businesses compare the specifications and configurations that matter for each project.
THE COMPLETE LIGHTING CATALOG
SPECIFICATION-GRADE FIXTURES
LIGHTING BY ENVIRONMENT
TRUSTED MANUFACTURERS
CLS / TECHNICAL LIBRARY
Technical guidance for better lighting decisions. Explore fixture selection, photometric planning, LED retrofits, lighting controls, and application-specific specifications—then compare the right equipment for your project.
TECHNICAL GUIDE
CCT, CRI and TM-30 answer different color questions A specification such as “4000K, high CRI” narrows a product selection, but it does not describe...
Read Technical GuideTECHNICAL GUIDE
Make municipal lighting bids answer the same questions A municipal lighting comparison becomes difficult when one bidder submits an efficacy number, another a layout...
Read Technical GuideTECHNICAL GUIDE
Audit the route people take through the property A property lighting audit should connect the parking lot, garage, building entrance and perimeter into the...
Read Technical GuideTECHNICAL GUIDE
Plan a gymnasium for the activities it will actually host A school gym may serve ball sports, assemblies, examinations, performances and cleaning within the...
Read Technical GuidePlanning a project? Start with the fundamentals, then compare products and request specification support.
KNOWLEDGE. INVENTORY. EXPERIENCE.
Based in Knoxville, Tennessee, Commercial Lighting Supply has served contractors, electricians, facility managers, businesses, and property owners since 1996. Our team combines decades of lighting experience with a nationwide catalog of commercial LED fixtures, industrial lighting, emergency lighting, replacement lamps, and electrical supplies—helping customers find dependable products and evaluate the specifications needed for new construction, retrofit, and facility maintenance.
About Commercial Lighting Supply