Our rigid density polyethylene sheet is formulated to meet the specific requirements of marine and other outdoor environments. It has the ability to withstand the effects of saltwater, moisture, and direct sunlight. Polycarbonate is suited for all outdoor applications where outstanding toughness and long life expectancy are required. Cast Acrylic is more common for boat windows than Polycarbonate. The high surface quality of Acrylic is achieved by casting against the glass. It has long-term weather resistance with no colour discoloration allowing 92% transmission of light.