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Hi everyone:
I just bought a Mann air filter "C 29 122/1" for my '91 744 and it has a white synthetic fiber matting on the bottom (similar to some furnace filters.) I have never seen a Mann panel filter with this and at first thought that it was packing material to protect the pleats of the filter while in the box. However, it appears to be glued or stuck to the filter. Does anyone know if this is supposed to be on there as some sort of pre-filter? I don't want to remove it if it should be there.
Thanks,
Andrew S.
'91 744 B230F
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