Window spring and foot replacement

Foot measures: 2 1/4" x 1 3/16" x 1/2" and is stamped with a "10"
Devices has an external spring that sould have connected to the interior one but the end is broken off.
The clear mounting plate measures: 1 1/4" x 1 5/16" x 7/16"




The 15-086 tandem housing and attaches to the S161 as demonstrated in the diagram below. You'll need to check for the number stamped on the original tandem housing or second coil to choose the strength option needed for the second S180 coil spring. If there are no other stamps or the tandem housing is missing, we'll need to know the weight of the sash the balances support to confirm the appropriate strength options.





In that case, we'll need to know the weight of your sash since 101M does not correspond to any of our strength options.








Unforutnately, that doesn't match out strength options either. As Casey mentioned, we will need the weight of the sash to confirm the coil springs needed for your repair.




That is a possibility, yes. To confirm, you could check an identical window in the house, if possible, to see if that window has a tandem coil housing.