This is a simple air filter box for use as a fume extractor, it is made to fit 125mm carbon filters, with a 100mm inlet diameter for connections to a standard extractor fan.
You can use other filters, such as Hepa etc. you may just need to make sure that they are 125mm square, or add a spacer around the outside.
Video on the unit is here: https://www.youtube.com/watch?v=z1r5QduH_Qg&feature=youtu.be
In my case I didn't use the blank panel, I put three filter mounts on instead, but if you need a different inlet diameter the blank panel may help you to make a suitable inlet.
You can make this from whatever you want really, but easy to use cheap filament is fine.