Thank you for posting. Can you confirm the stamp on your coil springs? I don't know of any that have a 10 pound rating. Also, how many springs do you have on each side of the window?
Can you also show me a clear picture of the pivot shoe? With your sash installed, I can't make it out. It would probably be best to remove it from the window entirely so that we can get a good look. Thanks!
That is weird! Can you tell me how heavy your sash is? I wonder if it is 20 pounds. In the meantime, I will look into this stamp and see what I can find.
Now that you mention it, the sash could weigh 15 + pounds. Hard to tell, but it is pretty heavy. Thanks again.
I would like to know the exact weight, if possible. You can determine this by removing the sash from the window and placing it on a scale.
Sorry I couldn't get back to you yesterday. I was able to weigh the sash - it's just a bit under 17 pounds. I hope that helps.
Paul: thank you very much for all of your help with this. Everyone we've dealt with at SWISCO has been extremely helpful. Thanks again.