Bob from SWISCO responded:
September 24, 2019
Thanks for writing in. This pivot shoe looks like our 15-111. This is compatible with our Series 160 Coil Balances. Look for a stamp on the coil tape that indicates the spring weight you need. If there is none, or you are uncertain, weigh your window sash. You can then match that exact weight with one of the weight ranges listed alongside each stamp option on the product page. |