help replace these balances

Question

the only markings on the coil are an EL on the top one and a D on the bottom one.
also the plastic cover for the top coil has an I
and the plastic cover for the bottom coil has a N
the housing that the coils are secured to has a #2 stamped into the plastic

User submitted photos of a coil window balance.

Paul · Accepted Answer

Looks like it's just the pivot lock shoe that needs to be replaced. Check out our 15-175 and see if this is a match. If you also need the coil springs, you should also look at our S152-4 for the D spring and our S152-5 for the EL spring.