29" SERIES 751 CHANNEL BALANCE

A quick learner from USA says:
I was replacing a couple of channel balances in my windows. I ordered 2 28HD K (29" SERIES 751 CHANNEL BALANCE) and installed them, but I noticed that I needed one for the exterior window, which was marked 28HD K e, which I am assuming means exterior. It looks like the spring is a bit different in length. Do you sell the exterior version for the 28HD K or do you think it doesn
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Tom from SWISCO responded:
No, it actually shouldn't matter. They are both the same... most likely the S751-28 with a 28HD stamp option, as you said.
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