I'm going to buy this one.... it's free standing also.
http://www.shop.com/Freestanding_Pet...tml?sourceid=3
But if you don't mind mounting it to the wall....
http://www.pet-dog-cat-supply-store....product_id=325 http://www.nextag.com/wide-pet-gate/search-html
Lots of them out there. Google "wide pet gate".
good luck!
deb