Acceptable sash weight range for red tip

A handy person from Phoenix says:
I need to replace two 29" spiral non-tilt balances. The part S306-29 is what I need, except the tips on the ones I am replacing are green, not red. The sash weighs about 17 pounds. Will the red tipped version work?
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Tom from SWISCO responded:
I recommend sticking with the Green Tip, since that's what the manufacturer used. Check out this spiral balance request form that I've started for you based on your specifications and fill out the rest of the information. One of our representatives will get back to you shortly thereafter with a price quote and an item to add to your cart.
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