13 inch and 22 inch window balance

Question

i think that the replacements i need are the 380 series but i am being asked for a stamped number. mine only have the printed information    22 4 ck caldwell and 13 4 bk caldwell and 13 4 lj caldwell these are 22 inch and 13 inch units

Casey · Accepted Answer

For Series 380 balances when the stamp number begins with 22 it will measure 23 inches, and when the stamp number begins with 13 it will measure 14 inches.
Please check the length of the balances again.

If they are 23" and 14" and Series 380:

Stamp option 2240 may be the needed replacement for the 22 4, remove the sash and place it on a scale to check.
S380-23 with stamp option 2240 will carry a window sash weight range of 19 through 23 pounds.

Stamp option 1340 may be the needed replacement for the 13 4, remove the sash and place it on a scale to compare the weight.
S380-14 with stamp option 1340 will carry a window sash weight range of 11 through 12 pounds.