Tonneau Cover

Hello everyone,
I am new to the forum and this is my first post so forgive me if I am doing it wrong. I recently purchased 2006 HD Ultra with a 2006 TLE Ultra. I am looking for the tonneau cover that allows me to keep the seat in an upright position and thus be able to lock it in place. I have had no luck in locating it,
even though many of the pictures from Harley show it. The only type out there is the flat tonneau with the back of the seat in a down position. If anyone has any information and can respond as to where I can find this item, it would be greatly appreciated. Having it custom made is over $350 which is a bit high.
Thanks, and I look forward to a positive response.