SafeHarbor windows features laminated safety glass combined with a thermally efficient insulating glass system. The exterior lite consists of a 1/8″ thick annealed double strength glass panel. The interior lite is constructed of two 1/8″ think annealed glass panels laminated with an interlayer membrane that becomes transparent during the laminating process and forms a 5/16″ thick panel. This unique laminated glass system combined with a second insulating lite creates an impact resistant barrier and delivers outstanding thermal efficiency. This is a great deterrent to would be thieves and burglars as this added layer of protection could help thwart the dubious plans of unscrupulous people.