Hello! Looks like you have the old Capitol window balance. We can supply these but they will need to be custom made, since they're a little old and aren't a stock product anymore.
To clarify exactly what materials we'll be using, it will be a 34" long, 1/2" wide metal channel for non-tilt windows. We'll then be installing the 19-024 top and 15-095 bottom fittings at either end. Do these look good to you? The balances we'll be providing are pre-assembled and will be ready to install right out of the box.
I just need a little more detail from you before we get started. First, your stamps aren't in my records. I think I might know what they indicate but since these are custom I don't want to guess. Can you tell me the precise weight of the sash these balances support?
Can you also tell me how many you needed, altogether?
Once I have that data, I'll email you a purchase link and price quote that you can use to place an order on our site.
That should be okay. Our balances are also, strictly, 9/16" in width, but they're all considered 1/2" in the trade. I'm confident that these balances will work for you.
For a 20 pound sash being supported by a 34" balance, we can go with the 3330 stamp. Two balances with this stamp can carry a load of 18 through 23 pounds.
I'll go ahead and email you a purchase link and price quote that will let you add 4 of these to your car. These will be made to the above specifications.
As for that guide, that'd b e our 18-093, which is also commonly used on Capitol windows.