https://community.graphisoft.com/t5/Modeling/AC27-MEP-duct-radius-splitter-works-only-with-FRESH-AIR-system/m-p/703386#M179577 <P>It seems that the duct radius splitter (duct fitting) object works in a weird manner.</P> <P>The two branches do not recognize the systems other than the Fresh Air default system. The main duct on the other hand works properly.</P> <P>Does it happen to you too?</P> <P>I'm in the INT version, latest hotfix.</P> <P>&nbsp;</P> <P><FONT face="courier new,courier" color="grey">Operating system used: <EM>Windows 11</EM></FONT></P> Fri, 22 May 2026 11:00:19 GMT alemanda 2026-05-22T11:00:19Z https://community.graphisoft.com/t5/Modeling/AC27-MEP-duct-radius-splitter-works-only-with-FRESH-AIR-system/m-p/703386#M179577 <P>It seems that the duct radius splitter (duct fitting) object works in a weird manner.</P> <P>The two branches do not recognize the systems other than the Fresh Air default system. The main duct on the other hand works properly.</P> <P>Does it happen to you too?</P> <P>I'm in the INT version, latest hotfix.</P> <P>&nbsp;</P> <P><FONT face="courier new,courier" color="grey">Operating system used: <EM>Windows 11</EM></FONT></P> Fri, 22 May 2026 11:00:19 GMT https://community.graphisoft.com/t5/Modeling/AC27-MEP-duct-radius-splitter-works-only-with-FRESH-AIR-system/m-p/703386#M179577 alemanda 2026-05-22T11:00:19Z