Hot Surface Ignitor, Silicon Carbide, Length (In.) 5-1/4, Voltage 120, Gas Type LP/NG, Tip Style Spiral, M Style Mounting Block Replacement Thermocouples, Pilot Assemblies, and Hot Surface IgnitorsItems are LP/NG except where noted. 5AU59 is 1/4"-dia. aluminum tubing; includes compression nut, ball sleeves, and breakaway ferrule. 2E446 has 36" armored cable leads with split-spade terminals. Includes mounting nut, spring clips, and PG9 adapter sleeve. 2EWF9 and 2EWF8 have low-mass, quick-dropout thermocouples.