Paul from SWISCO responded:
January 19, 2017
Unfortunately, Keller window company went out of business a long time ago. Before you purchase any weatherstripping, see if you can slide out the old wool pile. Keller manufacturer used to stamp lock their weatherstripping so it wouldn't slide out when moving the sash. If you can slide out a piece, compare its measurements to our 58-158. Other customers have used it for their Keller windows.
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