A rigid thermoplastic sign material available in transparent, translucent and opaque appearances. Acrylic sheet can be clear or produced in a variety of color tones. Acrylic that is manufactured by pouring a molten compound into a thin compartment and curing it under heat and pressure is said to be CELL CAST. Acrylic manufactured by casting a liquid compound between moving stainless steel plates that exert heat and pressure is sold to be CONTINUOUS CAST.