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High Contrast Linear Polarizing Film High Transmission of Unpolarized Light from 400 – 700nm Excellent Extinction Ratio Available in Various Sheet Sizes for your Customized Use Great for experiments and learning Physics. The sheet is 0.2mm thick and 8.3" X 5.8" (21.0cm x 14.8cm), IMPORTANT(!) please note that on both sides there is a protective film sheet. You have to remove it gently before use. Once removed, the polarizer sheet will be revealed, clean and smooth.