Enhance your photography, screen modifications, and physics experiments with our Linear Polarizing Film. Crafted from premium PET material, this film offers exceptional durability and optical performance. The adhesive backing is protected by films on both sides, ensuring easy handling and bubble-free application.For educators: We specifically recommend keeping the protective film on until demonstration time to avoid adhesive contamination and prolong the film's life during repeated classroom use.Product Details: - Dimensions: 7.8 x 11.8 inches (20 x 30 cm) - Thickness: 0.16 mm - Package: 2 adhesive polarizing film sheets.Usage Instructions: 1. Clean the surface and the film. 2. Peel off the protective film from the adhesive side. 3. Cut to the desired shape (if necessary). 4. Apply carefully, smoothing out any bubbles.Note: This polarizing film is not suitable for eyeglasses, 3D printers, or any application requiring precise optical alignment without professional consultation.