Tom from SWISCO responded:
March 5, 2021
This looks like it could be either our Series 161 or Series 210, depending on the thickness. Look these two products over and let me know if you had any questions. |
Tom from SWISCO responded:
March 8, 2021
It looks like yours is stamped with an 8, but if you have any doubts you can always weigh your sash on a scale. You would then divide that weight by how many individual springs support it. So, for example, if your sash weighs 16 pounds and it only has one spring on each side, then you would divide 16 by 2 and get 8, which means you want two 8 pound springs. Hopefully that makes sense. |