Balance spring assembly

Question

Hi I wanted to purchase three sets of balance springs for these windows that are 20 years old. Can you please help me find the part number to order thank you Brian

Lauren · Accepted Answer

Hi Brian, thank you for posting,

Your pivot shoe resembles the 15-199 that is compatible with either the 1/2" thick Series 160 coil springs or the 3/8" thick Series 165 coil springs.

Alternate view of 15-199

Please compare all dimensions to confirm the best fit. Review your original coils for a number stamped into the metal that will indicate the weighted options needed. If there is no numbers visible, please provide the weight of the window sash to move forward!

Are the others parts in your pictures tilt latches? Would it be possible to see an undamaged version from a similar window? Thank you!