The metal part of the sash measures 27". The stamping on the side is as shown 26-D-40. It appears to be a 351 series sash; however, I have no idea which option I should choose. I saw another poster post a similar question with a similar stamp and you asked what the weight of the sash was. After there were no responses.
So, is the weight of the sash necessary to determine which option to take? Is that the weight with the spring and plastic parts at the end or just the metal u-channel? How accurate would the weight need to be? I am not sure if I have a scale that would be that sensitive.
Let me know any other information that I could provide that may be of help. I will most likely order a dozen or more of these along with some handles that have pretty much disintegrated from sun exposure. Thanks.
