Pet Yard Plastic Exercise Pen Expansion Panel, 2-Piece, Gray features
Q:How does the extension connect
Do you have the origional pet yard? This is an extension to it. So you attach it just as you connect the pieces in the origional one…the bottom end you connect by pushing the bottom down with the piece your using to attach… And slide the top in place. The instruction book gives a better description.
Hope this helped.
Q:Do these extensions work with model number 8666?
Sorry I do not know.