[TenTec] Question on 9 Mhz 1.8 Filter for Omni 6+

[M.Todd Miskel]

Hi, I just purchased a 9mhz, 1.8 narrow filter from TT for my 6+ and noticed 
there's a red dot mark on one end. Are these filters directional and must be 
installed one way, or does it matter how they go in.
Thanks to anyone with assist ance on this. 73's Todd KD7EFQ

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