brb housing questions

[rustie]

i got a huge rubbermaid under bed storage container. its big enough for both brb's provided i create a divider. wood would be a poor divider since it would rot with all the moisture, so i was going to wrap it in saran wrap and heat it so it adheres better. this coating may keep the wood from roting but im sure there better ways to make a divider in this container.

any good wats to create a partition?