Grade A Polycarbonate Sheets feature a multi-wall or solid design with an integrated UV-protective coating on one side for outdoor durability.Material Features: Grade A polycarbonate with ISO 9001 and ISO 14001 quality/environmental certifications.Installation Note: Protective masking indicates the specific side that must be exposed to sunlight for proper UV blocking.Common Uses: Ideal for roofing, pergolas, carports, and skylights.