Choose from the options above to order custom cut-to-size Black Cast Acrylic Sheets-Cast 2025. ACME has a broad selection of stock sizes available. This option allows you to select just the size and dimensions you need without the need to purchase and store any excess. After dimensions are selected an updated price per custom sheet will be displayed. Cut-to-size products are CUSTOM and therefore NON-RETURNABLE. Dimension Information:Standard Cut-to-Size length and width tolerances are +-18", but are typically more accurate. Please contact us if you need greater precision. Acrylic sheet thickness tolerances are +- 10% and can vary throughout the sheet, but variations are typically less than 5%. Please refer to nominal and actual sheet thicknesses below. 18" = 3mm = 0.118"316" = 4.5mm = 0.177"14" = 5.5mm = 0.217"38" = 9mm = 0.354"12" = 12mm = 0.472"