can you install a emt pipe to flex connector in a hard lid ceiling,300.15 says you can not unless identified for it but my understanding is that only applied to flex or seal tight 90's
have you ever seen a spec saying " listed for concealed" on a spec sheet, i haven't.In fact i sent an e-mail to oz-gedney and basically says they dont have any documentation to that effect,and that since fmt is allowed in a concealed locations then so is the fittings and few others brands i checked dont say it