Complete LED tube terminology glossary. Definitions for T8, T5, DLC, CCT, CRI, lumens, lumen efficacy, Type A/B/A+B, ballast bypass, IP rating, and 50+ more terms.
Key LED tube terms: T8 (26mm diameter fluorescent tube standard), T5 (16mm diameter), DLC (DesignLights Consortium — US energy efficiency certification), CCT (Correlated Color Temperature — 2700K warm white to 6500K daylight), CRI (Color Rendering Index — 80+ standard, 90+ high CRI), Lumens (light output measurement), Lumen Efficacy (lumens per watt — higher is more efficient), Type A (ballast-compatible LED), Type B (ballast bypass direct wire), Type A+B (universal), IP65 (dust-tight, water jet protected), MOQ (Minimum Order Quantity).