+ rep. I plan on copying this system, but doing a cabinet that's 2x5x6 and mounting it up off the floor onto a stud support structure against my basement wall. I'm also planning on using plywood or sheathing for the exterior instead of the poly. I have a problem with insects and the basement isn't dry, so everything is getting waterproofed !! I might also make the ventilation system separate from the cabinet, that way I have more room for the mothers