ppg herculite k?Advertisement
In the same year, PPG introduced Herculite K, glass three to five times more shatter resistant than ordinary window glass. Herculite K became popular for residential storm- and sliding-door units because of its low cost. - read more
Best Answer: PPG (Pittsburgh Plate Glass) may have made the tempered glass, but they don't make insulated units. There are many different manufactures of insulated glass that buy their glass from PPG Without a dated receipt there's no way of knowing or making a warranty claim. A ... - read more
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