27CBlock and tackle window balances.

Question

Block and tackle window balances for 38 aluminum Ademco windows. The channels measure 28" long. Most the the windows are missing the entire balances.
They have 27C stamped on the channels.

Bob · Accepted Answer

Do both nylon fittings on either end lack wings, or 'tabs' to each side? If so, see either our S351-28 or S390-28. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. A stamp code of 27C conforms to our stamp option of 2730. Let me know if you have further questions.