Bob from SWISCO responded:
September 29, 2021
This looks like an older version of our Series 140 Coil Balance systems. To know what spring weight to select, weigh the window sash. Give me that exact weight, and we'll work out what you need. |
Bob from SWISCO responded:
October 4, 2021
This looks like an older version of our Series 140 Coil Balance systems. To know what spring weight to select, weigh the window sash. Give me that exact weight, and we'll work out what you need. |