GTI LED VPI-40GTI LED VPI 40 The LED VPI 40 is the ideal viewing system for wide format color appraisal with the viewing area of 40 x 45. 25. The unique design includes magnets to hold up any size print plus floor casters to allow the unit to be easily moved to wherever you need proper viewing conditions. All models include the LiteGuard 3. 0 which displays warm up, hours used, hours remaining, and when relamping is required. An observer standing at a comfortable