The 39-083, 39-140, and 39-143 were the first operators to come to mind. One might be what you need depending on the overall length of the arms. Have a look at the specifications and see how they compare with your old assembly.
A quick learner from Old Forge Pa says:
September 7, 2023
Thanks for your advice, I'm going to try the 39-140. The arms are 16" long in the full closed position and I think the 10.5 will work. I'll try one if it's good I'll buy a few more, need a total of 3 or 4.
Emily from SWISCO responded:
September 8, 2023
Great! You can place an order for this operator right on our website whenever you'd like or by calling (888) 991-1929.
