Hmmm, I thought there is a spot for the Heat Tape and probe wire on all the Ap's. I don't use UTH's. Mine are bigger and stacked, cant really look under.
Wheres Sauzo to answer this...
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There is a space for the probe wire...but the rest of the bottom side is flat, so the heat tape will be slightly raised rather than flush with the underside of the enclosure. Hope that makes sense.