SWISCO - The Replacement Hardware Authority

Channel guide for the 39-138 & 39-139 operator

A quick learner says:
Which is the right channel guide to go with the 39-138 and 39-139?
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Dave from SWISCO responded:
Thanks for posting.

These operators have the thin metal bearing on the end, which will require you to use tracks such as the 39-504, 39-512 and the 39-520.
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