Sash weigh 55lbs

A home owner from Brazil says:
Hi!
I have a 55lbs sash. I see the maximum weigh a pair of spiral balances can carry is 40lbs. Would you have a solution for that?

Regards,
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Tom from SWISCO responded:

I'm sorry to say that 40 pounds is the absolute cap for the S500-30 . These simply aren't made to carry anything heavier.

Are you sure this is what you have? Seeing photos of the balance you have now would allow me to confirm. We would need to see the top end, bottom end, and any stamping you can find on the tube itself.

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