We did dig it in as we get the occasional rabbit finding it's way in to the garden. From memory we bought rolls of about 3/4" chicken wire 2' wide and cut it into 1' wide lenghts. I will measure properly after dinner and confirm wire size. If you use chicken wire for the whole structure you will probably need to fabricate a hinged door. A plastic net is flexible enough to flap open and closed to get in and out.
Gardening is an excuse not to do housework
Greetings from Salisbury
Qualified member of the Confused Nutter's Club