I purchased TempZone™ Flex Roll 120V 1.5′ x 70′, 105 sq.ft., 13.2A, TRT120-1.5x70. I installed on top of CeraZorb which was installed on top of concrete slab. The instructions were easy to follow and the installation went very smooth. I would give 5 stars except the tape would not stay stuck into the CeraZorb and I had to use hot glue to keep the roll down. I also purchased the nSpire Touch: Touch Thermostat Programmable, which I love. The touch screen makes it so easy to program.
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