Therm 4.0kW [16.25" x 2"] Flo-Thru Incoloy Heater [Cal Spas] (26-0165-5S-K) impellers As a cleaner service component

As a cleaner service component

9 spa and pool filter cartridge

Designed for reliable heating in compatible systems

Supports proper debris collection during operation

Therm 4.0kW [16.25" x 2"] Flo-Thru Incoloy Heater [Cal Spas] (26-0165-5S-K) impellers As a cleaner service componentTherm [Cal Spas] 16. 25" 4. 0kW Flo Thru Incoloy Heater (26 0165 5S K) provides a targeted heating solution for Cal Spas, combining the specified output and construction needed to restore consistent water heating without relying on a generic substitute. Its 4. 0kW heating output and 16. 25" heater length should be matched to the original equipment requirements before installation, since spa heaters are not universally interchangeable. A heater