Therm [Marquis Spas] 12" 4.0kW Flow-Thru Incoloy Heater (26-C2278-1-5S-K) topsides and easier to enjoy

and easier to enjoy

Balboa genuine AX10A4 auxiliary topside

A grate with collar is especially useful because it helps create a more complete replacement at the visible drain point

Supports cleaner direct replacement during service

Improves repair quality and sensing confidence

Therm [Marquis Spas] 12" 4.0kW Flow-Thru Incoloy Heater (26-C2278-1-5S-K) topsides and easier to enjoyTherm [Marquis Spas] 12" 4. 0kW Flow Thru Incoloy Heater (26 C2278 1 5S K) is designed as a purpose focused replacement heater for Marquis Spas, where matching physical configuration and heating output is essential to dependable spa operation. Its 4. 0kW heating output and 12" heater length should be matched to the original equipment requirements before installation, since spa heaters are not universally interchangeable. In day to day spa operation, a