they work very well, you'll have to mount it on either wood or bricks and leave a gap in the base to make the door, the height of the base will depend on the size of the tort, this is much easier than trying to cut the frame about, most can be easily screwed to something I use the snad/soil mix inside as they will bury themselves, you can shut him in at night by simply putting a brick or similar across the door, fastening it to a base also makes it a bit more sturdy and secure, we also sat ours on a few paving slabs first stops them digging out or things digging in, thats a good price, some also use the little plastic cloches as they will also make a nice little shelter again pegged to the ground,
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