I can only find the 24" and 30" versions for sale
online. A few sites have the 20" version listed but most say discontinued or out of stock.
My concern with buying the 24" is that I would not be able to shorten it enough to fit the width of my 13' scamp
frame. Thought that the install manual might have min / max dimensions but no such luck.
Here is a link to the install manual for the BAL jacks.