not sure which channel balance to purchase

Hello there!

Thank you for reaching out to us. We can help supply this balance but it will have to be a custom order due to its configuration. The pulley wheel is built into the bottom fitting itself and this balance features an extended cord travel as well as a metal channel length ending in 5/8" which is what makes it custom. For example, your metal channel should be 31-5/8" long. 

What I'll do now is email you a purchase link and price quote for (2) balances that you can use to place an order on our website. Please note that there is a 5-6 business week lead time.