Alenco 28" metal to metal stamped 27 4

A quick learner from Weatherford Texas says:

Can you tell me what I need. Need both sides. Thanks David

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Bob from SWISCO responded:

Hey David. This looks like either an S351-28 or S390-28 to me. The only difference between these two channel 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. You will need a stamp option of 2740. 

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