50,000 Ohm Thermistor, Immersion, Machined Well, 1", Plastic Enclosure HEW3VSTD Enclosed Variable Speed Frequency Drive (VSD VFD) Rango de Presion:0 a 1" w.c. Enclosed Variable Speed Frequency Drive (VSD VFD) Inverter with Assistant control pnl NPT 2 Way 50 GPM Stainless Steel Trim DCA Profile On Off(Fail Open) 100 250 Vac 1 Aux Switch Machined Well Plastic Enclosure