string on the heating elements the ceramic may have interlocking protrusions along the axis of the heater element with a male and a female end allowing for expansion without exposing bear heater element the two hole ceramic pieces could be used with the three heating elements by alternatively connecting the middle of three elements to the adjacent elements the perpendicular hole is preferably utilized to attach the insulator to the support member by a bolt or other similar connector ceramic insulators with the holes for bolting to the support members could be provided for example every one to ten feet along the heater the ceramic insulators are preferably between about one centimeter and about three centimeters in length each longer insulators may be utilized but could be subject to leaving a longer length of heating element exposed if one of the ceramic pieces should break shorter pieces could also be useful and could result in a more flexible heating element insulator combination but become unnecessarily expensive to assemble friction between the inside of the channels and the resistive heating elements supports the weight of the resistive heating element the metal resistive heating element will expand upon heating greater than the ceramic insulator and thus will be held tighter due to both length.