Window Balance 2590 F025

Thank you for sharing your photos with us. Your balance closely resembles both our S380-26 and S385-26. The only difference between these two balances lie within the depth measurement of the bottom balance shoe. The depth measurement of the bottom shoe for the Series 380 is 1" and for the Series 385 is 1-3/32". You will need to measure the depth of your bottom shoe like in the diagram below to determine which of the two balances is the better match. Since your stamping does not correspond to any of our stamped numbers, you will need to weigh your sash and refer to sash weight chart listed on the balance store page. 

Alternate view of 15-004