Switch from plastic to diamond plate LP cover - advice wanted

@Verna Hello and Happy New Year.  I am a new member and new T@B 320 Boondock Lite owner since early December.  I have almost lost a dump hose through the back of the diamond plate propane box and was wondering what other owners have done to reduce that risk.  I assume it is open in the back to allow any propane to escape as well as venting gases from the battery.  I was thinking of just attaching some webbing to the rear of the box (something along the lines of what pick-ups have in lieu of a tailgate).  I tried to find some discussions of this with the search function, but I must not be keying in the correct words.  Do you know of any other suggestions for blocking the back of the box without preventing the venting?   This is a great forum.  Thanks for your work on it. 

Might be able to use sheet metal screws with large fender washers. The folks at the link have aluminum also which you would want.

Just did this to my tub. Used “pen enclosure wire” ( fancy chicken wire) cut to size with heavy duty wire/bolt cutter, and six 1/4x1 inch bolts with large fender and lock washers to hold it on.  I drilled 1/4 inch holes through the aluminum first, which made it easier.  Maybe someday I’ll go to the expanded metal, which looks a lot more professional, but for now I’m pretty happy with the outcome.

@Marceline. Good advice.  I’ll keep an eye on it, maybe add some plastic spacers on each side of the aluminum sheeting along with stainless steel bolts.  For now, my T@B is babied, spending about 95% of the time in an enclosed storage unit, out of most elements. But if I get my way, that percentage will drop as we get “ out there” more, so more rain and exposure.