27 6 ER CALDWELL Channel Balances

A home owner from Arizona says:
I need to replace a pair of channel balances for an aluminum non-tilt single-hung window. The metal length is 28". The code stamped on the current balance is: "27 6 ER CALDWELL"

From what I can tell, it appears to most closely match the Series 351 or Series 390 on your website. The bottom shoe measures 1 1/16" across the bottom. I don't see one that exactly matches that. The 15-001 and 15-002 are just a little too wide or a little too narrow. Would you please take a look and help me determine what I need.

Please let me know what you think I need and the the cost for two replacement units.

Thanks,
Mike
Photos of the customer's 27 6 ER Caldwell channel balance
Profile picture of Donna
Donna from SWISCO responded:
Series is 390. Please remove the window sash and place it on a scale.
We need the weight of the window sash in pounds to determine the proper stamp option.
A home owner from Arizona says:
The sash these channel balances will support weighs approximately 23 lbs.
Profile picture of Mike
Mike from SWISCO responded:
Please look at our series 390, option 2740 balances. The 2740 will support a sash weight of 23 lbs. Keep in mind, however, that this information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
A quick learner says:
Thank you for your help. I have placed an order. We'll see how balances you recommended work. If they work well, I need additional balances for a different size (weight) window and will contact you again for your assistance in determining the proper balances for that window...
A home owner from Arizona says:
The balances arrived today. They fit perfectly and work like a champ. I'll be in touch again when the need arises to order more. Thanks much!
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 856-317-6263 or at help@swisco.com.