400 series, 2†foam insulation requires longer shank honeywell electronic gas control valve, thermostat powered by 750 millivolt generator, noticeable led indicator light blinks 1 time at 3 second intervals during normal operation, increased temperature control & accuracy, integral spark igniter, fits reliance standard 400 natural gas water heaters with honeywell control.
- Natural Gas Control
- 400 Series
- 2" Shank
