Andersen 837 Narroline Sash Balancer

Expensive

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!

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: [...]

They were very easy to put in with the instructions that can with them and the visual aid from youtube. We are very happy with the way they worked.

Well packaged, clean, and exact replacement part for Andersen double hung window

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

Our window ropes broke and needed repaired. The sash balancer did the trick. T

This and YouTube made the replacement job pretty easy.

It broke after about 5 uses. The retractor for the upper window on one side stopped retracting. It’s not a difficult installation, but it’s a pain to have to do it again after only a few uses!

Fit perfectly, solved my window problem.