Non tilt window, no markings or color

A quick learner from Phoenix says:
I have some non tilt windows with no color marking on the tip. It looks like it matches your S306 series. It is a 3/8" Dia. and 29" length. I weighed the sash at about 18.5 lbs. What color would I need?

Thanks, Dennis
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Paul from SWISCO responded:
Hello! If your sash weighs 18.5 pounds, then I'd recommend the Red Tip color option.
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