Ejoy 48 in. L x 24 in. W x 0.39 in.Thickness Corrugated Polycarbonate Plastic Clear Twin Wall Roofing Panel (Set of 12-Piece) TwinWall_TWPSC48x24_10mm_12pc - The Home Depot
Ejoy 48 in. L x 28 in. W x 0.16 in.Thickness Corrugated Polycarbonate Plastic Clear Twin Wall Roofing Panel (Set of 12-Piece) TwinWall_TWPSC48x24_4mm_12pc - The Home Depot
Amazon.com : 14 Pieces Set 2' (W) X 4' (L) Polycarbonate Panel,Twin Wall Polycarbonate Panels Waterproof UV Protected Reinforced Clear Sheets for Greenhouse, Outdoor, Plant Stand Roof : Patio, Lawn & Garden