Window balance, better built in trailer

A purchasing agent from Cliff dwellers, az says:
Need replacement for this, see pictures
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
It's tough to say. I think you have either our S380-27 or S385-27, but I'm not sure which. The only difference between these two balances is the depth of the shoe. You will need to measure yours to confirm which Series is a better match.

Whichever is better, I'd also recommend the 2640 option.
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