Do you think it could be used on different size ducting?
For universality (all diameters) and ease of maintenance:
how about a device that can be inserted in a standard size hole drilled into the conduit? Insert, and then have a band clamp of sorts on the opposite side that would pull it tight around the periphery, for a seal. Would also minimize drag interference I think.
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Michael Patton (aka Killerbee)
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