Q:Once the extension kit is attached, can it be detached?
Yes. I attach and re-attach pieces all the time. I added them to make my play yard a big square. I took them out to make a smaller pen to put around my Christmas tree…now I have moved it again and have a different configuration to surround the fireplace.
Q:Can you put together more panels than 8; i.e., an 8-panel + 2 extension kits?
I don’t see why not. Just may not be the desired shape you’re going for in the end.
Q:How wide are just the two ext. pieces?
30.5 ” for each one. I also bought the two pieces with one is a swing door. I will be using these to potty train puppies out in the yards. I also use them to block off the stairs.
Q:Can I make a long straight gate if I put these together? I need 9 feet
You could, but it would not offer much stability. I guess it depends on what your need is.
Q:what are the pieces made of? it looks like metal but i can’t tell for sure
The entire thing is made of plastic.
Q:Does this fit into the Colorplay ultimate?
yeah we bought the 8 panel and the 2 panel. End up with a lot of blue and orange.