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Bob from SWISCO responded:
April 5, 2024
Hello there. The pivot shoe looks like our 15-087, which works with Series 180 Coil Balances. For each replacement coil spring, you need to choose a spring weight, which designates the weight the individual coil spring can support. The stamps on the shoe housing is not always reliable for this--it's best to check the coil springs themselves, particularly close to the 'tongue'. If there is no stamp or you're uncertain, give me the exact weight of the window sash that these coil balances support, and I can work out what you need. 
Series 180 coil balance diagram
The tilt latches might be our 26-243 and 26-244; even though the top surface appears different, if the dimensions below match otherwise, then these should work. That said, it's tough to tell from these broken pieces. It's best to use an undamaged tilt latch, if available, to compare. Let us know if anything differs, and if so, how via pictures and dimensions. 
Profile view of 26-243
Alternate view of 26-243
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Bob from SWISCO responded:
April 10, 2024
Hey there. A Series 180 coil stamped '8' suggests you need the S180-08 8 pound spring. This balance system is nonhanded, meaning the same components will work on both sides of the window. As far as both sides failing at the same time, no--that's not surprising. Balance systems tend to last about ten to fifteen years, depending on how well they're cared for. When the coil spring snaps on one side of the sash, suddenly the springs on the other side have to support the entire sash, which is much too heavy for them alone. Therefore both sides break down. In any event, if all the coils you are replacing are stamped '8', you should be good to go. Let me know if you have any other questions. |
