2430D Channel balances

A home owner from Florida/North Carolina says:
I need several channel balances for repair of window. Current channel balance is stamped 2430D with a BS near it, 25 inches long without attachments, 1/2 inch wide, bottom shoe depth is 1 inch, no wings on top or bottom shoes.. From your site, I think it is like your 351. Is this correct? I also need sash guides but am unsure of 18-009 or 18-018 ; mine is 1.5 inches long x 5/8 wide with a top length of 0.5 inches. Which one is correct? What is your return policy if I am not correct? How long to ship? This is for a vacation house in Florida so I will only be here another week or so and then return to North Carolina. I am trying to decide when to order based upon delivery and return time (Florida address or North Carolina address to return to Florida in March)
Profile picture of Bob
Bob from SWISCO responded:

Thanks for posting. Based on the information provided, I agree the S351-25 is correct. You'll need a stamp option of 2430. As far as the Top Sash Guides go, it comes down to all the dimensions listed, including the distance between the holes and the top of the guide. Compare everything listed in the pictures for both the 18-009 and 18-166 and see which, if either, best matches your old guide. If uncertain, please send pictures of your old guide to us for review. 

How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Replace a Top Sash Guide [1080p]
How to Replace a Top Sash Guide [1080p]
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
VIDEO
WATCH >
How to replace a channel balance
How to replace a channel balance
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 4-7 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.