The Master Spa X300930 flo-thru heater assembly has the following features and specifications.
Series: M7, LE, VALUE (but not limited to, unless specified otherwise above).
Manifold Length: 15"
Manifold Diameter: 2"
Stainless Steel: Yes
Stainless Steel Grade: 825 Incoloy
Heating Element Included: Yes
Kilowatt Rating: 5.5KW / 1.375KW
Voltage Rating: 240V / 120V
Temperature Sensor Included: Yes
Hi-Limit Sensor Included: Yes
Number of Threaded Taps: 2
Threaded Tap Location(s): Sensor taps approximately 2" from leading end and 13" from leading end @ 12 O'Clock.