need help

Thanks for posting. This pivot shoe resembles our 15-111. This shoe uses either the 1/2" thick Series 160 Coil Balances, or the 3/8" thick Series 165 springs. Measure the thickness of your old springs to determine which Series you need. The 15-150D Double Support works with the 1/2" thick springs, whereas the 15-204 is compatible with the Series 165 springs. If you need the keeper in your photos, see if the 90-237 could work for you. Let me know if you have any other questions. 

Great! In that case, see our Series 160 Coil Balances, along with the 15-150D Double Support. Now, an added wrinkle here is you have to order each coil spring separately, and the coil springs are distinguished by their spring weight--or basically the weight that each coil can support individually. There's usually stamps on the old springs that indicate the spring weight needed. If there is none however, or you are unsure, tell me the exact weight of your window sash, and I can work it out for you.