My x-pens for Dustor and Petie are set inside two 4.5 x 4.5 foot square 4″ tall square trays me and my friend built out of coroplast. It’s ingenius, if I do say so! I got the idea from seeing similar trays made out of coroplast for guinea pig cages but couldn’t find any big enough for the rabbits’ 4×4 foot square x-pens so, voila, made one myself! It was worth it, and all in all not difficult, with a friend to help me hold the walls of the tray upright while one of us did the taping to the bottom.
I called around town (San Francisco) for the supplies. We got the huge coroplast sheets at builders supply store (a van is recommended for transport, although I used a taxi) the store cut their huge sheets of white coroplast into box pieces, down into a bottom and sides for us (we ended up needing to make further cuts with xacto knives and a long metal straightedege ruler when we were putting the thing together at home which was easy). Once we had the pieces all cut, we taped the pieces together piece by piece with a 3″ wide industrial strength chemicals-resistant tape (urine-resistant) I bought in a plastics store. One person held the sides stable upright while the other taped it to the bottom floor.
Once the tray was taped together we laid down 16 squares of adhesive linoleum tiles square to square to cover the bottom wall to wall. Then on top of that we taped in place to the coroplast sides a square of sheet linoleum cut to a little over 4 x 4 foot square and that serves as the floor of their pen. (The adhesive tiles could have been foregone but we used them for good measure.) Of course, it doesn’t hurt that both buns use their litterbox faithfully, but the thing is watertight. Not only do the x-pens stay in place, the tray they set in contains all hay and stray poops and debris. The walls of the tray clear the walk-thru door to the x-pen so I can still walk in and out to do maintenance which amounts to cleaning the litterboxes and sweeping loose hay from inside the penwalls into a dustpan. It’s great!