Andersen 837 Narroline Sash Balancer

Exact replacement for my windows. Installed easily and works well.

I have now replaced the sash balancers on 9 windows that were installed in the late 70s. Bought the first set from a local window supplier. They had to be ordered and cost more than Amazon. Bought the remainder on Amazon and all went well. However, one set came partially bent on the mounting tab but I was able to bend it back into shape. I was apprehensive about doing this job, but it really is quite easy. Hardest part was notching out the wood frame with a chisel since these replacements a just a bit longer. I wish I had more windows to change out!

Great chart in description to assist with choosing the correct one.

It is quite an ordeal to replace one. Im handy and I may hire someone if I need to replace another.

Window is repaired. Best to use the Anderson site to make the right selection and instructions in taking window apart. This one was most helpful for me: [...]

Worked great.

This and YouTube made the replacement job pretty easy.

Did what I expected it to do