Identify correct part

Question

Trying to identify the correct part. The only stamp on the channel is 28F. The metal channel is 29" long. The width of the channel is 1/2" or just short of 5/8". The end plastic piece is 15/16".

Emily · Accepted Answer

Thank you for reaching out to us. We believe you should be able to use the S380-29. This comes attached with the winged 19-005 top fitting and 15-005 1" deep bottom shoe. This Series of balance is popular in Florida. You may also need the 2860 stamp, but you can weigh the window sash on a scale to confirm it falls within the 32 to 35-pound range.

Comparison of the S378, S380 and S385 balance shoes.