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