Hayward CHXTBW1930 All Gas Thermostat Bulb Well Replacement for Hayward H-Series Millivolt Pool Heater<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>All gas thermostat bulb well</li><li>Fits hayward h-series millivolt heater models h1501， h150p1， h2001， h200p1， h2501， h250p1， h100id1， h100idp1</li><li>Also fits hayward h-series pool heater models h100id1， h100idp1</li><li>Weighs 3 pounds</li></ul></div><img src="http://ecx.images-amazon.com/images/I/411ZxsUBv-L.jpg" noproxy>