Therm 4.0kW [17-1/2" x 2"] Flo-Thru Incoloy Heater [Leisure Bay] (26-1001-5S-K) valpakproducts Helps restore the visible inlet

Helps restore the visible inlet fitting area

Improves valve confidence and repair efficiency

The Waterway 310-4010 impeller is designed for compatible 1

The 2-cup holder lid adds a convenience-oriented detail that may appeal in spa and recreational settings where user-facing surface features matter

If your system depends on a 1-1/2 inch threaded valve connection

Therm 4.0kW [17-1/2" x 2"] Flo-Thru Incoloy Heater [Leisure Bay] (26-1001-5S-K) valpakproducts Helps restore the visible inletTherm [Leisure Bay] 17. 5" 4. 0kW Flo Thru Incoloy Heater (26 1001 5S K) is a replacement heater developed around the fit and operating requirements of Leisure Bay, making it a practical choice when the original heater assembly must be matched carefully. Its 4. 0kW heating output and 17. 5" heater length should be matched to the original equipment requirements before installation, since spa heaters are not universally interchangeable. When a spa