Bob from SWISCO responded:
March 30, 2020
This looks like our 15-175 Coil Balance Shoe. This shoe uses our Series 152 Coil Balances. The coil balances are the spring tape in the window track that this shoe attaches to. There should be stamp codes on the coil tape that indicate what spring weights you need. If there are none, or you are uncertain, obtain the exact weight of your window sash, and we can work out what you need. |