I hesitated before buying it clap, and I did well I decide finally. It is beautiful, practical, robust, noise is clearly audible (which is still its main use) and it goes super well on camera. The only drawback it has is to write it: I have not dared to write with chalk as the reviews present speak and do not recommend. Either way, it shows, this is the kind of support that ends quickly filled with erasures on all sides, without recovering the original sharpness. I overcame the problem with white tape, so I am writing it and I have only to remove it after use. But as it is not practical at all, I do it when I really need. Side dimensions: width 30.5 cm, 27.3 cm in height, 3 mm thick at the slate, 2 cm thick at the clap. Stroke of luck, he returned in my carry bag as if it was made for.
A clap which I highly recommend. As many write here, it may very well serve as a decoration, but I find it a shame given its professional qualities.