I purchased some heat cables and I had phoned to ask some questions to ensure I got the right product for the job. I had to make 3 phone calls in order to get my information and it turned out to be incorrect anyway. The cables have a one metre unheated section which the lady assured me was in addition to the heated length of the cable. As it turned out the unheated meter was inclusive so I had to modify my design of my equipment costing me time and money. Rather inconvenient really and jolly annoying having gone to the trouble of checking. I am marking them poor instead of very poor because they went about their incompetence in a pleasant and polite manner.