Case Study Thumb Correctional State Prison - Lapeer, MI In 2010 the decision to convert Thumb’s perimeter security, and parking lot lighting systems was given the “go ahead” to use Magnaray® pole mounted W4PT5048, 4’ arrays. These units replaced dual 400 watt HPS floods on the 46 perimeter poles (30’) that were spaced 125’ apart and set back 30’ from the outer security fence. Correctional Officers love the white, instant-on capab

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