window roll slides

Thanks for reaching out! Your coil balance pivot shoe appears to be the 15-177, which are compatible with the Series 152 Coil Balance Springs.

To determine the right coil for your coil balance assembly, you'll need to check the metal spring for any stamps or markings. This should indicate the number of pounds is needed for one side of the window. For example, if yours is stamped with a 7,  you'll need a 7lb coil.

If there are no markings or they are hard to reach, you'll need to obtain the exact weight of the sash these coil assemblies support. As another example, if you have a 14lb window, then you would need a 7lb coil on each side of the window to support the sash weight.

You'll need to purchase the S152-7 coil from our website.

If you need assistance placing the order, a member of our customer service team would be more than happy to help. They can be reached at (888) 991-1929.

Have a great day!