that would be EMT
"RBM" rbm2(remove wrote in message
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If you're referring to MET tubing,you're way over the top. Just use 4 inch
steel duct or even flex duct
"Vince" wrote in message
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Is it wise to use metallic tubing as the exhaust (4 inch diamter)
conduit for a Panasonic model FV-08VQL3 ?

Would metal tubing be prone to producing more noise than a
plastic-covered ring tubing ?