Great product to limit the space for our dwarf rabbit, who was always able to jump over, crawl under or wiggle through anything we had tried to date...  The bar spacing is perfect to prevent her from getting her head stuck, which is the major issue we had with most pet gates, more designed for dogs.  The product is ready to use, just take out of the box and place where you need it.  It's heavy, sturdy, but I do recommend also buying the support feet to make it more stable.  Would definitely buy again.