replacing Caldwell channel balance
A handy person from CA says:
March 6, 2016
Ours is marked 27 4 CN Caldwell. Looks like your S385 series. Not sure which strength model I should order. Please advise. Thank you
Tom from SWISCO responded:
March 7, 2016
A stamp of 27 4 usually corresponds to our 2740 option, but you can always weigh your sash to confirm.