Atrium Window Part

Your window balances can likely be replaced with either the S351-29 or the S390-29. Although, you'll need to be sure to double check the length of the metal channel to ensure it is 29". To determine the correct series, you'll need measure the depth of the bottom shoe.

Our 2840 stamp should work to replace yours. It will support a sash weighing between 23 to 28lbs.

Comparison of the S351 and S390 balance shoes.