Marketing InformationWatts Heat Plate is a snap grip, heavy duty, extruded aluminum underfloor plate designed for use with 3/8 IN or 1/2 IN RadiantPEX Plus or RadiantPERT pipe. All plates are constructed of heavy-duty, 16-gauge aluminum, with an integrated PEX support channel. The system is to be installed using Watts RadiantPEX Plus or RadiantPERT pipe. Channels are four (4) feet long and are to be secured to the underside of the subfloor with the use of self-tapping screws.