Markings are 27 4 HN Caldwell

Quick Learner from Vancouver

I purchased six or eight of these a year or two ago. My name is Douglas  if you can find that in your files

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Emily
Emily from SWISCO
SWISCO
Expert

Hi there!

Thanks for reaching out to us. It looks like you previously purchased the S390-28 with the 2740 stamp option. I can't be sure if that's what you have here though. I would need to see a photo of the top fitting and the inside of the metal channel where the spring connects to the pulley mechanism to confirm. Take a look at the specifications and see what you think. 

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