I believe from your website that I could use your part 81-081. Do you have a tandem wheel assembly that could replace it? My sliding glass door is very heavy and the single wheel assemblies don't last very long. Thanks
Tom from SWISCO responded:
July 1, 2019
I'm afraid that we don't have a tandem version of our 81-081. The closest we've ever been able to find is our 81-030, but it's not exactly the same. I'm afraid that I cannot guarantee if it will work for you.