New answers tagged conduit
You should be able to use straps/hangers double-listed for EMT/RMC, but double-check with your inspector before starting work because they are technically not listed for FMC. However, it is easy to argue they meet the requirements for FMC based on the following information: The outer diameters of FMC are in between the outer diameter requirements for EMT ...
Try using an 11b extension ring or a 1900 extension ring. Actually made to deepen a junction box, but should work for this application.
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