Need help identifying the channel

Hello there!

Thank you for reaching out to us. I agree that the S795-27 would be a match if your balance uses a T-lock shoe like the 15-195. The number on the pulley mechanism doesn't indicate the weight so you would need to weigh your sash on a scale to determine the correct spring strength option for your replacements. There's a chart that you can refer to under the product description on the S795-27 product page which indicates what option you'll need based on the weight of your sash. 

Another important detail to note is that the Series 795 mounts to the top of the window track using a screw. If yours uses a hook, please let us know! We can still help but this would need to be a custom order. 

That's correct. A stronger option would make the window harder to close.