A plastic check sheet holder compatible with A4 size. - Type: Check sheet holder - Size: A4 size compatible - Material: Plastic You can sandwich and display paper media up to A4 size with a clear plate. I used it to display and patrol safety notices (made of steel) at construction sites, etc., after writing on them. Even in rainy weather, rainwater slowly enters through the gaps, but it didn't get flimsy in light rain. There are also holes at the top for string, so it can be used in places where magnets are not available. Thank you for viewing.