caldwell 28 4 LN (?)

Question

nontilt window spring.  sez caldwell 28 4 LN on channel..   metal channel is 29 inches long and 9/16 (your "1/2") wide.  Need 6 for 3 windows.

Bob · Accepted Answer

Hey there. I believe this is either an S351-29 or S390-29 Channel balance, depending on the depth of the bottom shoe. See below. In either case for a stamp choose 2840.

Comparison of the S351 and S390 balance shoes.