Type of product: Heater assembly Make and Model: Balboa Power: Volts:230 Hz:50 KW:3.0 Amps:11.5-12.0 Specification Sensor compatibility:Pre M7 double harness style Material spec:Incoloy Required flow rate:Set by pressure switch Flow detection:2-PSI Balboa pressure switch Compatible with: Lite leader box, M3 TUV, Spaform SF100, Catalina, Hydropool, Canadian Spa, Hyrdospa, Marquis Spa, Aegean, and more... Connections / Fixings: Usually held in with a double aluminum brace. Hi limit sensor pouch on underside. 2" white plastic female sockets to connect to plumbing Dimensions: Heater length:15 inches Heater Diameter:2 inches Between terminals:1.25 inches Overall length complete:19.5 inches Additional notes: You may find cheaper versions of this heater on the internet but they are most likely cheap copies. If it is not an official Balboa product with genuine labeling do not buy it. If your heater looks the same as this one it most probably is but contact us if you need further help.