I have two window sash balances I need to replace

Question

I think I need the Caldwell 385. The balance has winged top and winged shoe, and the shoe measures slightly more than 1 inch. I also weighed the sash at 11.2lbs, and my sash is stamped 12-5, so I'm assuming I need the https://www.swisco.com/13-inch/pd/Series-385-Channel-Balances/S385-13 with the 1240 option? I've attached pictures of the balance, please let me know if I can provide any additional details to check/confirm before I place my order. Thanks

Bob · Accepted Answer

Thanks for posting, and nice work. Based on your report, yes, you need the S385-13. The only question is that stamp option. We don't carry this balance in stock with a 1250 stamp; but if your window sash weighs exactly 11.2 pounds, then the 1240 stamp would work as you suggested, since it can support a sash in the weight range of 11 through 12 pounds. Did the window ever feel difficult to close or keep closed, prior to the balances failing? That would be a sign the original calibration was too strong (and evidence the 12-5, or 1250, stamp was incorrect). Either way, if the weight falls within the 1240 range, I think this will work fine for you, but double-check the weight to be safe, and let me know if you have further questions.