Feature: 1. Superior Light Transmission: The multi layer coating enhances the square UV filter's light transmission and reduces reflectivity, resulting in clearer image quality while protecting your camera lens from potential harm. 2. Seamless Compatibility: Designed to fit tightly, this UV protective filter is suitable for use with 4x5.65 inch filter frames or matte boxes like for SmallRig, ensuring ease of use. 3. Crystal Clear Imaging: Made from optical glass with just 0.1% reflectivity, the rectangular UV filter delivers high resolution images with minimal color distortion, ensuring accurate color reproduction. 4. Easy Maintenance: With a water resistant design that forms droplets, this square UV filter is easy to clean, dust proof, and scratch proof, leaving no traces behind after cleaning, maintaining long lasting clarity. 5. Enhanced Versatility: Unlike traditional circular filters, the square UV filter is generally mounted on a lens hood or filter frame, accommodating larger lens sizes for broader compatibility and flexibility. Specification: Item Type: Square UV Filter Material: Optical Glass Product Size: Approx. 10.16x14.35cm/4x5.65in . Package List: 1 x Square UV Filter 1 x Storage Box