Need window balancers

Thanks for posting. Based on the characteristic nylon attachments this looks like either our Series 380 or Series 385 channel balances. The only difference between these two Series is the 'depth' of the bottom nylon shoe. With the Series 380 the depth of this nylon shoe is 1", whereas with the Series 385 it is 1-3/32". Compare with your own and see what is best.

You will need to measure the length of the metal channel, not including the nylon attachments, to determine the balance length you must select--this is likely 24", but confirm this to be certain. You will then need to select a stamp option of 2340, as indicated by the stamped number on your metal channel. Let us know if you have any questions.