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Amazon.com: ZAQI Thick 2 3 4 MM Transparent Plexiglass Sheet for Frame/Sign, Clear Plastic Plexiglass Panel for Porch, Roof, Screen Door & Carport, Easy to Cut (Color : 3mm, Size : 100x100cm/40x40
Amazon.com: SOURCEONE.ORG 3/8 th Inch Thick Acrylic Plexiglass Sheet, Clear Heavy Duty : Industrial & Scientific