If your Sovereign
is anything like mine, you had a bi-folding shower door attached to the wall behind your tub. The previous owners removed mine prior to me buying my Sovereign
. Fortunately, I was recently able to pick up a used door from Minno.
At this point you have a few options. Install a shower rod from the wall to above the cabinet. Install a bendable shower track from the wall following the contour of the tub (an L shape), Or, get a used shower door like me.