Stronger stamp for my 770 balancers

A contractor from milwaukee wi. says:
March 9, 2018
I need a 28 I the strongest listed is F. do you have any stronger?
Profile picture of Tom
Tom from SWISCO responded:
March 13, 2018
Sure, we can specially make this for you. Can you just tell me how many balances you need? Once I know that, I'll email you a special order link and price quote for the requested quantity.
28" Series 770 Balance
28" Series 770 Balance
S770-28
$12.70
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
VIDEO
WATCH >
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.