Hello stp9,
I apologize for the delay in getting back to you on this post. I was out of the office on Friday when this product came in and I am just now getting to look at it to answer your question.
There is actually no maximum length vertically for the bellpull. You can make it as long or as short as you desire. It comes as two separate pulls...one for the top that has the chain included on it and the other is the bottom piece that doesn't have a chain. Horizontally, the fabric piece has to be 6 inches to fit on the bell pull rod but vertically, you can make it as big or as short as you want. I hope this helps?!
~Kristi @ ECS