Fully encased filters with a custom CNC aluminum frame in the industry standard size of 4 x 5.65, compatible with any matte box. High-quality edge protection safeguards against clips and drops from the matte box. Laser-sharp filter markings on the front and top of each filter. 50% lighter than standard 4 x 5 filters, perfect for gimbal applications. The aluminum frame provides unmatched glass protection, shielding your glass from matte box clips, drops, fingerprints, and more. You no longer have to worry about where to place the device during a filter change; you can set it down on any flat surface without risking damage to the glass. 100% visible filter engravings are located on the top and front of the frame to identify the filter strength. With these engravings, you can quickly determine which filter you need, grab it, and start shooting. Thanks to the aluminum frame, you can easily insert and remove the filters without leaving fingerprints on the glass. The PolarPro x Motion Clubhouse 4 x 5 filters are designed to ensure flawless color accuracy. Capture the world through your camera just as you see it in real time. A neutral density filter (ND filter) blocks a portion of incoming light and extends exposure time, allowing for effects like blurred water or preventing overexposure of the image when shooting wide open in bright midday sun.