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Does the pnuematic tubing for LCN have to be run through conduit?

No, the LCN (925) pneumatic tubing does not have to be ran in conduit for normal applications.

However, it is not Plenum rated, so it is sometimes ran inside conduit when installed in a rated plenum area.

  • LCN does have the 3328 coupler available for attaching 925 tubing to cooper tubing for plenum areas

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