Tom from SWISCO responded:
July 19, 2019
Thank you for submitting your post to our discussion board. Can you please tell us what the outer tube diameter is? If it is 3/8" you are looking at the Series 400 spiral balances. If it is 5/8" you are looking at the Series 400 spiral balances. In either case, you will also need our 75-005 charging tool and will need to compare the tip colors we offer to the sash weight range chart located in the product description pages of the spiral balances. |