20 9 Caldwell replacement

Hi there! Thank you for waiting during this busy season.

I recommend the S380-21 with a 1" deep shoe or the S385-21 with a 1-3/32" deep shoe. You will have to measure as shown below to confirm the best match.

You will also need to weigh the window sash on a scale to determine the new stamp for the replacement balances. There's a chart under the S380-21 and S385-21 product descriptions that will help you decide which stamp to select based on the weight of the window sash.

Please let us know if you have any questions. 

Comparison of the S378, S380 and S385 balance shoes.