27C Window Balance with Hook
Thanks for posting! Based on the description of your balances, I am confident that we can supply you with a replacement, however, I will need to see the photo of your balance to confirm pricing and availability. It may also help to see any other attachments that may be related to the balance.
There is a chance the balances you need will need to be custom made. So it will important to see the photo of it.
Let me know if you have any questions.
I'm afraid that would not be the correct replacement balance. The Series 385 channel balance is a non-tilt balance that has a winged top and a winged bottom shoe, with a depth of 1-3/32". The hook on that balance is installed just above the shoe, where the wheel and pulley system is installed.
Since your balance has the 15-198 hook at the top of it, it is more likely that this is for a tilt window. Therefore, the S385-27 will not install properly.
I'll need to see the bottom attachment from the balance marked with the 27C to identify the proper replacement. It could be likely that it is still in the window channel.
Let me know if you have any questions.