Non tilt window channel balances and top sash guides

Hello,

I would like to request your help in identifying my non-tilt window parts. I have two different height size windows (with same width) that have exact the same type of channel, just different lengths. 

The 19" inch long channel has a stamp of "18 4 II" with a 1/2" channel width and bottom shoe measures 7/8" deep. The other channel measures 28 3/8" long and has a stamp of "27 1/2 3 JI" with a 1/2" channel width and bottom shoe measures 7/8" deep. Their top sash guides are identical. The house was built in 1990 and I'm assuming these have never been replaced.

Thank you, your time is much appreciated! Jessica

Hi Tom,

Thank you for getting back to me. I measured again, and yes it's 28-1/2". I included a photo of the shoe with the measuring tape. It's reading 7/8", but not sure if this is a different size in industry measurements. Below are the all the details:

2 qty. of 19" length, stamp 18 4 II, 1/2" width channel, 7/8" bottom shoe (see photo if this is correct)

10 qty. of 28 1/2" length, stamp 27 1/2 3 JI, 1/2" width channel, 7/8" bottom shoe (see photo if this is correct)

What's the cost of custom made? I also need top sash guides for each.

Thanks for your help! Please let me know if you need any more information.

Jessica 

Here are photos of the top sash guide.

Hi Tom,

You're most welcome and thank you for putting together the custom order. Could you please edit the 28305 Channel Balance (28 1/2" length channel) to be 4 quantity? Given the price, I'll just fix two windows at the moment, and will buy the rest later. The 1840 is fine, I'll buy that as it's set.

Thank you!

Jessica