Therm [Marquis Spas] 12" 4.0kW Flow-Thru Incoloy Heater (26-C2278-1-5S-K) topsides A Viton O-ring helps create

A Viton O-ring helps create a dependable seal at a compatible larger circular connection

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

Verify part number PLOP-PRG-8-79 and compatibility before purchase

Balboa genuine AX10A4 auxiliary topside

Therm [Marquis Spas] 12" 4.0kW Flow-Thru Incoloy Heater (26-C2278-1-5S-K) topsides A Viton O-ring helps createTherm [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