Andersen 637 Narroline Sash Balancer

It was an original equipment replacement that fitted perfectly, not a replica of some sort. It is a very good idea to follow the YouTube instructions online. It is necessary to purchase two units for each window. In any case, even if only one of the units is defective, both should be replaced. There are some difficulties in removing the plastic jamb liners, and older jamb liners tend to be more fragile. In addition to replacing both sash balances, it is highly recommended that the headlining and side liners be.

Michaela TOMLINSON

| Apr 17, 2021

Compared to the original, the product is definitely an upgrade. In my experience, the included instructions were very detailed and helped me replace the balance successfully the first time. As far as I can recall, I had no major problems.

Noah Shields

| Jul 20, 2020

Andersen original parts, not knockoffs, were the units I received.

Halo Torres

| Apr 06, 2021

I have no problems at all.

Luis Bennett

| Feb 12, 2021

This is an easy to install product. Two sets of windows were in need of repairs to make the condominium marketable.

Cecilia TALBOT

| Aug 05, 2020

This product does what it says it will do.

Cesar Bell

| May 09, 2021

I expected it to be like that. Parts that work well as replacements or repairs.

Ariyah Lin

| Mar 21, 2021

This worked perfectly -- it was pretty easy to remove the window and that fixed the balancer issue.

Fabian Rodriguez

| Apr 01, 2021