SWISCO - The Replacement Hardware Authority

What stamp option should I choose for 11/07UNIQUE 17-B-20

A quick learner from Regin, Saskatchewan says:
The stamp for my existing (broken) balance (1/2" X 18" Series 380) is
"11/07UNIQUE 17-B-20". I presume that would be replaced with option 1750: 17 to 20 lb. ?
Profile picture of Tom
Tom from SWISCO responded:
It looks like your stamp likely corresponds to the S380-18's 1720 option, but that if you want to be completely sure you should weigh your sash on a scale
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)