GTI LED replacement lamps are high-CRI (Ra>98) T8 tubes made for GTI viewing booths and color matching systems. They are custom made to rigid specifications. As a result, each lamp gives stable light quality and accurate color rendition for 7,500 hours. It also cuts electricity use by 50% or more.
Why choose GTI LED replacement lamps
- D50 lamps (TL##T8/GL50): a close match to D50 spectral specifications, so they support the ISO 3664:2009 viewing standard.
- D65 lamps (TL##T8/CM65): these conform to ASTM D1729, SAE J361 and ISO 3668.
- Long life: 7,500 hours of stable light quality, with energy-saving LED technology.
- Retrofit design: the 1″ T8 tubes wire directly to the AC power line, so they fit existing luminaires.
Pick the right GTI LED replacement lamps
Order by length and light quality. The model number tells you both, for example TL48T8/GL50 for a 48″ D50 lamp. Lengths run from 18″ to 60″.
- EVS-2028 LED: three 24″ lamps
- EVS-2540: three 36″ lamps
- CVX-3052 and EVS-3052: three 48″ lamps
- CVX-3: four 60″ lamps
- PDV-2e: one 18″ lamp; PDV-3e: one 24″ lamp; PDV-2020e: two 24″ lamps
Installing GTI LED replacement lamps
First, note that LED lamps connect directly to the AC line and bypass the ballast. Therefore, the person doing the work should understand a wiring diagram. In addition, LED lamps cannot be dimmed continuously. GTI offers step-dimming luminaires instead. These lower the intensity by switching off lamps.
Would you rather replace the whole luminaire? See the Field Upgrade Level 1 or Level 2 upgrade kits. Still running fluorescent tubes? Our GTI replacement fluorescent lamps are available too.
Spec sheets
Download the full specifications: D50 LED lamp spec sheet and D65 LED color matching lamp spec sheet. You can also browse the GTI brand page for viewing stations and desktop viewers.
Need help choosing a lamp? Contact our team and we will confirm the right model for your booth.







