this shower is 29 years old .....the door across the bottom is 30 1/4 ' the part is 30" the holes ar on either side and in the middle.
Dave Sr. from SWISCO responded:
December 28, 2017
Take a look at our 10-325 or the longer 10-326 shower sweep. One of these could be a good replacement, depending on what size you need. You will most likely need to drill new holes in the sweep to match up to your existing holes.