No it's a c-serpent rack unit the foil tape is on the probe which is sitting on the flexwatt heat tape been using it for over a year now haven't had any issues like I said in a previous reply the temperature is holding its not fluctuating like it was before I'm figuring that it was because I had things unplugged for a time being
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sorry for assuming the worst. we read about worst-case scariest a lot so sometimes we assume that's what it is. sorry for the assumptions!
wish i could provide advice here. i'm looking into racks myself atm.