Popular Flex is available to all Popular heaters
Standard heater lead length + required cable length
The chemical lead section should be long enough to reach above the surface of the liquid. The splice must not be immersed. The high liquid level is clearly marked on the lead with a red ring.
The splice is rated to IP64 (splash proof) however, it has been fully tested in our own laboratory under full immersion at elevated temperature with no adverse effect for a sustained length of time.