Based on your channel balance stamp, you'll want to select spring strength option 2040. Two of those should be able to carry a 15 to 23 lb sash.
Need to know which weight option I should choose.
Casey from SWISCO
Sep 7, 2018 1:34 pm
2 Replies
Quick Learner from Colorado
Sep 7, 2018 2:19 pm
Hello. I've got everything I need to order 21" series 385 channels, but am confused about the weight option. Can you help me identify which I should select? Thank you.
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