coil balances
Your coil balance housing looks similar to our 15-087 coil housing pivot. The top housing attached to the housing pivot is the tandem housing part, 15-086. Carefully review and compare the dimensions to those shown below to determine if this is the correct replacement. I am confident these are the replacements you'll need.
The coil housing pivot is compatible with the Series 180 coil balance spring. To determine which spring is needed for your housing, you'll need to look for any stamps/marking on the metal coil. If there are no stamps/markings or they cannot be read and/or cross-referenced, you'll need to obtain the exact weight of the sash. Then you'll take the sash weight and divide it by the total number of coils in the window.
For an idea on how to remove/install these balance assemblies, take a look at the video below from our Swisco YouTube channel.
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