Window spring mechanism for a single hung window
A quick learner from Seattle, WA says:
August 17, 2016
I need a replacement part for a 5-6 year old single hung window that has hidden spring hardware at each side. One fell out. Number on it is 39DS HM 38 It is a spring inside of a galvanized channel. The channel is about 102 cm long.The spring is 58 cm long when not extended. I would replace the units on the right and left side of the window. Please let me know if any of this makes sense.
Tom from SWISCO responded:
August 18, 2016
We should be able to help, but we will need more information. If you can, please remove the balance from the window and show us a couple pictures of it. Specifically, we need to see a picture of each end.