Marvin window tube balace

A quick learner from Charlton, MA says:
How do I order six 37 inch tubes, mine are marked 36HD and have the 15-014 Knife lock device.
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Tom from SWISCO responded:
Hello! Would you happen to know what your balance Series is? If not, please take a picture of what you have now so that we can determine what you may have.
A contractor from Charlton, MA says:
Hi Tom,
Hope the photo is helpful.
User submitted a photo of a window balance.
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Tom from SWISCO responded:
Yes, thank you! If you have the 15-014 knife lock shoe and a 37" long ribbed channel balance, I would recommend looking at our S751-37 channel balance.
A contractor from Charlton, MA says:
Thanks Tom,
I'm probably doing something wrong. Every time,almost, when I try to remove the sash the knife lock flies and blows up against the balance body. Either my technique is flawed or the plastic has become brittle.
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Tom from SWISCO responded:
I recommend watching the video below, this should help you out.
How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
VIDEO
WATCH >
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