planer board caddy fishing

I want some planer board caddy's but don't want to spend $90 per, so I thought why not make them I have a plasma table at my disposable. Does anyone have dimensions for something like this or no. the one in the picture would be the one I would want to make, one of the three slot ones.

https://preview.redd.it/vzj2ln2dxrke1.png?width=2312&format=png&auto=webp&s=2f9f950804a505eb9a709f5ed37efbcab55186d3