Channel balancer Millard single hung

Question

One is 27" with a 2640 stamp. The other is 15" with a 140 ? I can't read the 4 number

I need 2 27" and 4 15"

Thanks

User submitted photos of a window balance.

Paul · Accepted Answer

Thanks for posting. Your photos are a bit confusing. Looks like you have two different balances, one with wings and one without wings. But I'm not sure which one goes with which stamp. SEe our Series 385 and Series 390 channel balances to start out.