Acrylic, also known as polymethyl methacrylate (PMMA), is a thermoplastic polymer known for its high transparency, lightweight, and resistance to impact and weathering. Acrylic is highly transparent and allows for good light transmission, making it a popular choice for applications such as windows, skylights and lighting fixtures. https://www.reevesextruded.com/plastic-materials/#acrylic-polymethyl-methacrylate-or-pmma