The Balboa 58107 heater assembly is for systems that have a plastic control box (not metal).
The Balboa 58107 flo-thru heater assembly has the following features and specifications.
Series: M7, GL2000, GL2001 (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: 3.0KW
Voltage Rating: 240V
Mounting Studs: Yes
Number of Mounting Studs: 2
Temperature Sensor Included: Yes
Hi-Limit Sensor Included: Yes
Gaskets Included: Yes
Split Nuts Included: Yes
Tail Pieces Included: Yes (removable)
Tail Piece Size: 2" x 2" (removable)