Clear polycarbonate sheets and bars, also known as PC sheets and bars, are made of a durable thermoplastic that provides a continuous-use temperature range of up to 265°F (129°C). These sheets and bars are 20 times stronger than acrylic and keep their physical properties over a broad range of operating temperatures; they’re also 200 times stronger than glass. They are commonly used to make machine guards, windows and windshields, and safety shields and sports equipment.