Window will not stay up

Quick Learner from Detroit

Jun 9, 2017 8:20 pm

It's a double hung window and it won't stay up unless we prop it open with a stick. There is no marking or numbers on the existing hardware.

User submitted photos of a window balance.

4 Replies

Paul from SWISCO

Jun 13, 2017 11:25 am

Thanks for contacting us. Please see our 16-024 mounting bracket and 15-087 coil housing pivot. These appear to match the hardware I see in your pictures. I would also recommend our Series 180 coil spring. You will need the number printed on your old spring to determine the best Series 180 option.

Quick Learner from Detroit

Jun 13, 2017 8:54 pm

Thank you for your reply. The only marking on the coil is 729X. How do I determine what series to buy.

Paul from SWISCO

Jun 15, 2017 9:17 am

With a mark of 729X, I would recommend our S180-7. Each of these springs can carry 7 pounds, so if you have one on each side they would be able to support a sash weighing 14 pounds.