GTI VPI-52GTI VPI 52 The VPI 52 is the ideal viewing system for wide format color appraisal with the viewing area of 52 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 II which displays warm up, hours used, hours remaining, and when relamping is required. An observer standing at a comfortable distance