Andersen 531 Narroline Sash Balancer

Mechanism failed at 18 year point. Needed to match exact window with balancer. Lots of good encouragement on the YouTube and from Andersons website for DIY. Hardest part was removing side vinyl/plastic panels without cracking or scraping casement. Patience and persistence paid off.

Ordered two of these to replace the balances in one of my Andersen windows and one of them was binding and the cord felt wobbly when it was pulled down and then retracted. Needless to say once I screwed it up into the window jam it wouldnt retract at all..

We ordered the wrong size.

Almost as easy to install as the videos show. Taller windows are easier to do as you have more room to bend the plastic jamb covers. best to do in warm weather when plastic is more pliable. take your time, dont drop the sash. An extra person to hold the sash during the procedure might help. works great.

extended the life of my windows

perfect fit shipped fast

I liked that it went in without having to modify the window

Exact replacement. Works well. Lower left side (plastic) jamb liner has to be bent and removed in order to replace this balancer. Order one before you attempt to do this job. They will surely kink and be damaged especially with smaller windows.

Appears to be a genuine Andersen product. It was kind of a pain to replace due to the size of my window and the fact that the window had extension jambs, which means you cannot full remove the header piece, but the window works like new now that it is done.

Fixed my problem with the window.