Casey from SWISCO responded:
February 26, 2021
Hello, I don't see a kerf in your photo that the 58-173 uses to install but it's possible that it might have broken off at some point. If you're sure that the 58-173 is what you need, you will need to purchase two of them and cut the second piece down to size. If you're not sure that this is the best option, please remove a piece of your seal and show us a side profile, along with dimensions, to research this further for you. Thank you! |