TUBE DIAMETER: 1.9"; LENTH 13" FLANGE TO FLANGE STAINLESS STEEL HEATER, STANDARD STYLE AQUATEMP REPLACEMENT HEATER - 120 VOLT, 1.5 KW (ADD 2-3/4" TO LENGTH FOR ELECTRICAL BOX) FLANGED ENDS: INLET, OUTLET END, ELEMENT END ELEMENT END: ELEMENT AND ELECTRIC BOX ATTACHED INCLUDES ********* (2) 1-1/2" SLIP UNIONS FOR 1.9" TUBE (1) GROUND LUG (#6-14 AWG WIRE RANGE) ON TUBE (1) 1/8" PRESSURE SWITCH TAP ON TUBE (1) 1.5 KW 120 VOLT INSTALLED ELEMENT (2) 5/16" THERMOWELLS IN ELEMENT END FLANGE ....(ONE THERMOWELL IS USED BY THE HI-LIMIT) ....(ONE THERMOWELL IS USED BY THE THERMOSTAT) (1) ELECTRICAL BOX (6" X 4-1/2", 2-3/4" DEEP) (1) HI-LIMIT W/RESET AND RESET COVER IN BOX (1) HEATER LIGHT (120 VOLT) IN BOX (THERMOSTAT W/KNOB IN BOX (275-3123-01 EATON) (1) PRESSURE SWITCH (25 AMP,SPST,BARBED) TDI 3028 DOES NOT INCLUDE ********** SOME ELECTRIC BOX COMPONENTS (CONTACTOR OR WIRING)