Good looking, sturdy construction that is free standing.  Can fit odd openings.  Walk through door is wonderful and easy to use.

Pros: Looks good, delivered fast, walk through door
Cons: Not heavy, moves a little too easy.  One end is along side of staircase and due to steps leaves about 1-2" space our puppy was able to get nose in an move gate to get through - we had to secure with string/wire to a spindle.