Welcome to the teeth rattling world of series motoring!!
My diesel 109 is kitted out for my dogs. I sectioned the back off with a guard made from the child fire guards ( the huge ones!!- i also used some of this to fit round the corners at the back, so nibbling teeth couldnt eat any wiring!!!!), but at the back door ive got a secondary door from 'Barjo', which enables me to leave the back door open on hot days. The door is from a puppy pen, and it fits nicely with 4 bolts, but i leave it in all the time.
If you want a photo, pm me your email address-im not techno minded to upload on here!!
Mel.