Replacement spring assy MI 3500CHS

Question

Need a replacement spring assy for a MI 3500CHS...any ideas? Want a kit to replace all attachments and springs

User submitted photos of a window balance.

Paul · Accepted Answer

If you want a self contained balance system kit, you could substitute your hardware with our Series 140 and still use the same pivot bar that's in your the sash. Can you just tell me the exact weight of your sash? That will help us determine which Series 140 will work.