Dimension One 4.0kW D-1 FloThru Heater [15" x 2"] [230v] (1563-08) multiportvalves this O-ring helps support dependable

this O-ring helps support dependable large-diameter sealing and contributes to cleaner overall assembly integrity

Threaded smooth directional design in gray and stainless

This cartridge is intended for use when the existing filter is worn

Spa motor configurations are designed for consistent performance in smaller setups

feels rough when turning

Dimension One 4.0kW D-1 FloThru Heater [15" x 2"] [230v] (1563-08) multiportvalves this O-ring helps support dependableA FloThru heater helps warm spa water as it moves through a compatible heating assembly, and this Dimension One D 1 unit is designed as a 4. 0 kilowatt heater with a 15 inch by 2 inch format for 230 volt applications. When the original heater becomes inefficient or fails, the spa can lose the dependable heat support it should provide. The D 1 compatibility, 4. 0 kilowatt output, 15 inch by 2 inch size, and 230 volt design give this heater practical