two same brand tilt window channel balances

Question

same manufacturer two windows
1/2 inch wide
ribbed
one pair at 35 inches long
spring stretch 19 3/8 inches
spring relax is 15 3/4 inches
one pair at 29 inches long
spring unknown

Tom · Accepted Answer

Hello! I think these are available on our site. They look like Series 770 balances. Take a look at the details of our S770-35 and S770-29 balances. I believe these match what you need.