Features: High contrast linear polarizer. High transmittance of unpolarized light from 380 to 700nm. Enhances the study of light and color in a clear and effective way. Ideal for a variety of imaging applications, experiments involving birefringence, light scattering, and related scientific uses. Widely used in photography, science projects, and physics education. Specifications: Material: TAC+PVA Size: Approx. 30x20cm / 11.81x7.87 inch Optical Type: High contrast transmissive Transmittance: single (42%); crossed (0.005%) Color: neutral gray Polarizing Efficiency: 99.99% Film Thickness: 150m Polarization axis: 50mm Wavelength: 380700nm Thickness: 0.25mm Direction: linear Note: Please allow 01cm error due to manual measurement. Ensure you are comfortable with this before ordering. Due to differences between monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Polarized Film Sheet