Bob from SWISCO responded:
August 28, 2020
If the metal channel is 16" long, and the nylon shoe is greater than 1" in depth, then you need an S385-16. Sometimes the shoes wear down from use over time, but if it's greater than 1", the Series 385 is the safest bet. Now, your stamp option of 15-9 is from an older rating system we no longer use. To know what stamp option to select, obtain the exact weight of the window sash. You can then match that exact weight with one of the weight ranges listed alongside each stamp option under the product description on the balance's shop page. |