Hello, I have a hung windo in a 20 year old house that appears to have a mix of S380 and S390 window channel balance according to your drawings. The stamped numbers on it are 2130 "C". The top appears to be your 19-005 part number and the shoe is your 15-001 part number. Does this make sense? Should I order it this way or be better off using S380 or S390?
would you know which sash guide goes with that type of channel balance?
Also, Am I able to order them attached with my purchase?
thanks, Fowzy S
