Channel balances

A handy person from VA says:
Channel balance is 35" long, not including top and shoe attachments. I think the one I need is series 351 and spring weight of 3440 (based off stamp number) but I'm not positive. I also need top sash guides, and I think the ones I need are the 5/8" in black product code: 18-009, but again I'm not positive. Unfortunately I dont have a picture of that right now but can send one later to confirm.
Thumbnail of the uploaded file named 20190501_142627.jpg
Thumbnail of the uploaded file named 20190501_142610.jpg
Thumbnail of the uploaded file named 20190501_142810.jpg
Thumbnail of the uploaded file named 20190501_142820.jpg
Thumbnail of the uploaded file named 20190501_142758.jpg
Profile picture of Bob
Bob from SWISCO responded:

Thanks for writing in. Yes, this is either a S351-35 or S390-35. he only difference between these two balance Series is the 'depth' of the bottom nylon shoe. The Series 351 bottom nylon shoe has a depth of 1", whereas the Series 390 bottom nylon shoe has a depth of 1-1/8". Compare with your old balances and see what you think matches best. You will indeed need a stamp option of 3440.

For you Top Sash Guide, it would be best to see 'mugshot' pictures of it removed from the sash, from the front and side. 

A handy person from VA says:
Here are the pictures for the top dash guide. I also included a picture of the bottom nylon shoe, is this the correct part measuring a depth of 1 1/8"?
Thumbnail of the uploaded file named 20190502_210613.jpg
Thumbnail of the uploaded file named 20190502_210554.jpg
Thumbnail of the uploaded file named 20190502_210606.jpg
Thumbnail of the uploaded file named 20190502_210547.jpg
Thumbnail of the uploaded file named 20190502_211426.jpg
A handy person from VA says:
After looking at the top sash guides more, I think the one I need is 18-163. Measurements were about the same, hard to tell 13/32 but it's probably close to that. Does that sound right?
Profile picture of Bob
Bob from SWISCO responded:

Thanks for getting back to me. I agree, your Top Sash Guide looks like the 18-163. As far as your channel balance goes, you are indeed measuring the correct dimension for depth: if it's greater than 1" (or 1-1/8" exactly), then the S390-35 is the better match. 

How to Replace a Non-Tilt Channel Balance
How to Replace a Non-Tilt Channel Balance
VIDEO
WATCH >
How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Identify Replacement Channel Balances
How to Identify Replacement Channel Balances
VIDEO
WATCH >
How to replace a non-tilt channel balance
How to replace a non-tilt channel balance
GUIDE
READ >
Choosing a Non-tilt Channel Balance: What Will We Need?
Choosing a Non-tilt Channel Balance: What Will We Need?
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.