Coil Housing pivot

A contractor from Arizona says:
I have been searching for these replacement parts. However my dimensions are off. I am coming up with an 1" to 1 1/8" x 1/2" thick your parts are an 1 1/4" will these work I have attached a picture. Also can you explain how the tandem housing is used thankyou.
User submitted picture of coil balance housing shoe.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting on our discussion board! What you have looks very similar to our Series 180 Coil Balance System. Please refer to our Series 180 Diagram to see if these parts match your sample.
Series 180 Diagram
Make sure to match up your coil spring with those of our Series 180; if you still aren't sure, we will have to see pictures of it removed and separate from your window. We should be able to help you identify it, then.
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