what lb for 2640
Quick Learner
Oct 3, 2017 3:08 pm
How do I figure out what lb do I need. The stamp number on my is 2640. 3/8 wide and 27 inch length.
2 Replies
Tom from SWISCO
Oct 4, 2017 11:20 am
It's likely 2640, but you can verify that by weighing your window sash and comparing to the chart on the webpage for the balance you end up selecting.