u/privacylmao

It's my newly acquired work van and I put a plywood flat in the back but since I removed the seats I get extra storage space.

I would create a small door and have access to that storage space but I want to protect the fabric from dust, stain, damage from the tools I put in constantly. I made a "box" from 2x3 and pieces of plywood but it easily adds 35kg for nothing.. I was thinking rigid plastic in pieces but how would I joint them and make the pieces solid enough not to disassemble after a while.

The space under the plywood I would use is 40x20x10

Thanks for your insights!