I ordered the security fence because I am maternal assistant and I wanted to enjoy the warmth of my fireplace insert while welcoming children. I have not needed to buy extensions, Flex 5 barrier perfectly surrounds my fireplace. The nurse went to my home and fully endorsed the barrier and asked me where I had found it, because you can not find in the nursery stores. So I am delighted. The safe door is very dificult to open for children, but not at all for us. My husband also indulge with. I can even drying clothes on the fence. It is easy to fold, although I will not do every day. It will remain in place until the chimney work.