Left and right window balances needing to be replaced

Hello there. Can you double-check the length of the metal channel, not including the nylon fittings on both ends? Also, note that bottom fitting on one balance has wings, or 'side tabs', but in another photo those tabs are missing. Did they simply break off? Please confirm. If they just broke off, and the metal channel is 33" long, see our S380-33 or S385-33. The only difference between these two balances are the bottom nylon shoe, so compare both with your old hardware to see what matches best. For a new stamp option you'll choose 3250.