Block & tackle window balance 27" x 1/2"

Question

There are no identifying stamp marks on the balance. The metal section is 27" long x 1/2"
i'm hoping to get a quote for 6 replacements units.

Bob · Accepted Answer

Hello there. I believe this is either an S380-27 or S385-27. The only difference between these two balances is the 'depth' of the bottom nylon shoe. See below. Measure your old balance's shoe depth to see what matches best. Let me know if you have further questions.

Comparison of the S378, S380 and S385 balance shoes.