We purchased this to use to block the stairs on our back porch, to either keep the dogs on one side or the other.  It was the only one I could find long enough to go across completely.  We secured it with bungee cords to the porch, and that works really well.  My only real complaint is the door latch is not secure at all, my larger dog can easily bump it and it pops open.  But we just used a small bungee cord to keep it shut.

Pros: Very long in width, pretty sturdy gate
Cons: Gate door pops open easily