Immersion heater box spanner for the removal of immersion heater elements from boat calorifiers (hot water tanks).
Immersion heater box spanner for the removal of immersion heater elements from boat calorifiers (hot water tanks). The immersion heater spanner, or box spanner, fits on the hexagonal nut of the immersion heater element for removal or installation.
| Box Width | 3" 13/32 (84mm) |
| Box Depth | 25mm |
| Height | 90mm |
