Balboa 4.0kW [15" x 2"] Flo-Thru Heater (26-58001-K) universalfiltration A side panel with flaps

A side panel with flaps helps form part of the outer body and related sealing or protective structure of a compatible robotic cleaner

or remote communication issues

Two required for complete matched replacement in applicable setups

The Raypak Tube Bundle [156A Polymer Kit] is a replacement heat exchanger tube bundle kit for compatible Raypak 156A pool and spa heater systems

or equipment layouts where a warmer neutral lid color is preferred over standard white

Balboa 4.0kW [15" x 2"] Flo-Thru Heater (26-58001-K) universalfiltration A side panel with flapsBalboa 15" 4. 0kW Flo Thru Heater (26 58001 K) is a replacement heater assembly intended for compatible spa systems using a conventional 15" flow through heating layout. Its 4. 0kW rating is a key operating specification and should be matched with the original heater, control system, and available electrical service before installation. When a spa no longer heats correctly or struggles to maintain temperature, a failed heater assembly may be part of